CARL ZEISS MEDITEC AG Patent applications |
Patent application number | Title | Published |
20150273243 | OPHTHALMIC SURGICAL PULSE CONTROL APPARATUS - An ophthalmic surgical pulse control apparatus has a pulse generator, which, during a switch-on duration of the pulse generator, generates pulses having a pulse duration during which a needle of a phacoemulsification handpiece substantially vibrates at resonance and which, during a switch-on duration of the pulse generator, produces pulse pauses having a pulse pause duration during which the needle vibrates only minimally or not at all. A pulse with a follow-on pulse pause forms a pulse packet having a pulse packet duration. The pulse generator generates pulse packets which immediately follow one another and the sequence of the values of pulse duration and pulse pause duration of sequential pulse packets during the entire switch-on duration of the pulse generator is an aperiodic sequence. | 10-01-2015 |
20150238078 | DEVICE FOR RELIABLY DETERMINING BIOMETRIC MEASUREMENT VARIABLES OF THE WHOLE EYE - A device for determining biometric variables of the eye, as are incorporated in the calculation of intraocular lenses including a multi-point keratometer and an OCT arrangement. The keratometer measurement points are illuminated telecentrically and detected telecentrically and the OCT arrangement is designed as a laterally scanning swept-source system with a detection region detecting the whole eye over the whole axial length thereof. The multi-point keratometer ensures that a sufficient number of keratometer points are available for measuring the corneal surface. By contrast, telecentricity ensures that the positioning inadequacies of the measuring instrument in relation to the eye to be measured do not lead to a local mismatch of the reflection points. The swept-source OCT scan detects the whole eye over the length thereof so that both anterior chamber structures and retina structures can be detected and a consistent whole eye image can be realized. | 08-27-2015 |
20150119356 | Ophthalmic Viscoelastic Device - The invention relates to an ophthalmic viscoelastic device, comprising at least one viscoelastic polymer, wherein the at least one viscoelastic polymer is covalently bound to at least one phenolic compound. The invention also relates to a method for producing an ophthalmic viscoelastic device, in which at least one phenolic compound is covalently bound to at least one water-soluble, viscoelastic polymer. | 04-30-2015 |
20150018836 | Injector Tip For An Ocular Lens Injector Device, Device With An Injector Tip And An Ocular Lens, As Well As Ocular Lens Injector Device - The invention concerns an injector tip ( | 01-15-2015 |
20140379268 | Method And Device For Preoperatively Predicting A Postoperative Horizontal Depth Of An Intraocular Lens In An Eye - The present application relates to a method and a device for preoperatively predicting a postoperative horizontal depth of an intraocular lens in a patient's eye. Parameter values are provided, said parameters including a first parameter as the depth of an anterior chamber of human eyes, a second parameter as a horizontal length of human eyes, and a third parameter as a postoperative position of intraocular lenses in human eyes. Specific triplets of values are selected from said values as main interpolation nodes, each triplet of values comprising a value for each of the three aforementioned parameters, and the main interpolation nodes are entered into a three-dimensional coordinate system that is spanned by the three parameters. The main interpolation nodes are connected by edge connecting lines, and a predictive network that is unevenly formed in the three-dimensional coordinate system is generated at least using the positions of the edge connecting lines in order to predict the postoperative horizontal depth of the intraocular lens in the patient's eye. | 12-25-2014 |
20140340501 | SURGICAL MICROSCOPE WITH POSITIONING AID - A microscope comprises an imaging system comprising an objective having an objective lens and producing a magnified image of a focal plane of the imaging system, an image sensor disposed in the focal plane and outputting an electrical signal to the controller, and a display communicating with the controller. The controller converts signals of the image sensor into digital single images of the object, outputs the same to the display, detects a displacement of the microscope transverse to an optical axis of the objective lens relative to an object imaged, and compares the displacement with a threshold. If the displacement exceeds the threshold the controller controls a zoom system such that a total magnification is inverse monotone to a relative velocity between the microscope and the object, and/or stores the digital single images, composes them into a total image, and outputs the same to the display. | 11-20-2014 |
20140340500 | Surgical Microscope with Enlarged Working Distance - A surgical microscope | 11-20-2014 |
20140330260 | SECTIONING A TRANSPARENT MATERIAL USING OPTICAL RADIATION - A method for creating cuts in a transparent material using optical radiation, wherein the optical radiation is focused at a focus in the material and the focus is displaced along a trajectory, wherein a periodic, crossing Lissajous figure is used as trajectory as viewed perpendicular to a main direction of incidence of the radiation. | 11-06-2014 |
20140327884 | METHOD FOR AUTOMATIC OPTIMIZATION OF THE CALCULATION OF AN INTRAOCULAR LENS TO BE IMPLANTED - A method for calculating the values of an intraocular lens to be implanted, wherein the results of numerous cataract operations are taken into account in the calculation for intraocular lenses to be implanted in the future. At least the corneal topography, the length of the eye and the depth of the anterior chamber are determined pre-operatively, the values of the IOL to be implanted are calculated by means of ray-tracing, and at least the corneal topography, the length of the eye, the depth of the anterior chamber and the objective, wavefront-based residual refraction are determined post-operatively. The measurement values determined pre-operatively and post-operatively are used to optimize the surgically-induced astigmatism and the post-operative anatomical lens position for calculating the values of IOLs to be implanted in the future. | 11-06-2014 |
20140320805 | METHOD, OPHTHALMIC MEASURING SYSTEM AND COMPUTER-READABLE STORAGE MEDIUM FOR SELECTING AN INTRAOCULAR LENS - A method of determining at least one selection parameter for selecting an intraocular lens to be inserted into an eye; the method comprises reading, by a data processing system, data indicative of an axial position of at least a portion of an anterior surface of an at least partially empty capsular bag of the eye, relative to an optical axis of the eye. The method further comprises determining an axial position parameter, which is representative of the axial position of the portion of the anterior surface, depending on the data. The method further comprises determining the at least one selection parameter for selecting the intraocular lens depending on the determined position parameter. | 10-30-2014 |
20140288540 | EYE SURGERY REFRACTION CORRECTION - A planning device produces control data for a treatment device for eye surgery which produces at least one cutting surface in a cornea of the eye using a laser device. The planning device includes a calculation module for establishing a cornea cutting surface. The calculation module is configured to establish the cornea cutting surface based on data of a refraction correction, to produce a control data set for actuating the laser device for the cornea cutting surface, and to determine the cornea cutting surface in such a way that it consists of a plurality of sub-surfaces, each of which make a contribution to the refraction correction. | 09-25-2014 |
20140288539 | Ophthalmic Laser System and Method for Severing Eye Tissue - An ophthalmic laser device with a treatment beam path that includes a variably adjustable modulator. The ophthalmic laser device is adapted to determine for the radiation pulses to be inputted into the tissue a power density to be inputted into the relevant target volume through the treatment beam path depending on a spatial distance between two target volumes of immediately successive radiation pulses and to adjust the modulator parallel in time with the control of the deflecting unit such that the relevant pulse in the target volume has the determined power density. | 09-25-2014 |
20140288537 | DEVICE AND METHOD FOR PHOTOCOAGULATION OF THE RETINA - A method for adjusting sub-threshold photocoagulation of a retina includes directing a beam from a radiation source at the retina. The beam has a spatially distributed intensity profile including at least one maxima, which comprises a total of less than 20% of a cross sectional area of the beam at a plane of the retina, and an entire remaining area of the beam has an intensity that is less than 80% of the intensity of the at least one maxima. The remaining area is configured to provide sub-threshold coagulation so that visually detectable coagulation is provided only in areas of the at least one maxima. | 09-25-2014 |
20140257259 | PRODUCING CUT SURFACES IN A TRANSPARENT MATERIAL BY MEANS OF OPTICAL RADIATION - A method for producing a cut surface in a transparent material using optical radiation. A laser device separates the material using optical radiation and includes an optical unit focussing the radiation along an optical axis into an image field defining an image-field size. A focal position is adjusted transversely along the axis, producing a cut surface extending substantially parallel to the axis and, in projection along the axis, is a curve having a maximum extent. The focus is displaced by adjustment of the focal position along a trajectory curve lying in the cut surface. The cut surface has a maximum extent which is greater than the image-field size. The focal position is moved transverse to the axis along the curve. The image field is displaced transversely, and the focal position is adjusted in an oscillating fashion along the axis on the curve between an upper and lower axial focus position. | 09-11-2014 |
20140243805 | METHOD AND DEVICE FOR COMBINED TEMPERATURE-CONTROLLED LASER THERAPY BY MEANS OF A MULTIFUNCTIONAL THERAPY LASER - A laser therapy device includes a solid-state laser configured for a CW operation and including a pump source, and a controller configured to generate at least one first pulse of the laser in a first-pulse operation. The controller is configured to switch on the pump source to a pump power level S1 at least once during the first-pulse operation. A rise time E, after which the pump power level S1 of the pump source is attainable and starting from the time the pump source is switched on, is in a range of 50 ns to 350 ns. | 08-28-2014 |
20140236134 | TREATMENT APPARATUS FOR SURGICAL CORRECTION OF DEFECTIVE EYESIGHT, METHOD OF GENERATING CONTROL DATA THEREFORE, AND METHOD FOR SURGICAL CORRECTION OF DEFECTIVE EYESIGHT - A treatment method and apparatus for surgical correction of defective-eyesight in an eye of a patient, wherein a laser device is controlled by a control device, said laser device separating corneal tissue by irradiation of laser radiation to isolate a volume located within a cornea, wherein the control device controls the laser device to focus the laser radiation, by providing target points located within the cornea, into the cornea, wherein the control device, when providing the target points, allows for focus position errors which lead to a deviation between the predetermined position and the actual position of the target points when focusing the laser radiation, by pre-offsets depending on the positions of the respective target points to compensate for said focus position errors. | 08-21-2014 |
20140233706 | METHOD AND APPARATUS FOR GENERATING X-RAY RADIATION - The present invention relates in particular to methods and apparatuses for generating and/or providing X-ray radiation with specific radiation characteristics, in particular with a specific radiation dose rate curve ( | 08-21-2014 |
20140233037 | ARTICLE FOR USE IN AN OCT-METHOD AND INTRAOCULAR LENS - An article for use in an OCT method, the article comprising a solid substrate and nanoparticles dispersed in or on the substrate in at least one light transmissive portion of the article such that the nanoparticles result in an increased extinction of the light transmissive portion along a transmission direction of the light transmissive portion compared to the substrate being free of nanoparticles. The extinction of the light transmissive portion along the transmission direction is less than 6, wherein the extinction is defined as a negative decadic logarithm of a ratio of an intensity of light which is transmitted through the light transmissive portion to an intensity of light which is incident on the light transmissive portion, wherein the light is in at least one of a visible and a near infrared wavelength range. | 08-21-2014 |
20140214024 | OPHTHALMIC SURGICAL CONTROL APPARATUS - An ophthalmic surgical control apparatus is configured to be connectable to a piezo handpiece for emulsifying an eye lens. The control apparatus includes a frequency generator having a first and a second frequency module. The first frequency module generates a first oscillation signal having a first frequency lower than the ultrasonic resonant frequency of the piezo handpiece. The second frequency module generates a second oscillation signal having a second frequency greater than the ultrasonic resonant frequency of the piezo handpiece. A frequency generator control module controls the first and the second frequency modules. | 07-31-2014 |
20140213993 | OPHTHALMIC SURGICAL CASSETTE - An ophthalmic surgical cassette acts with a peristaltic pump having a wheel defining a periphery and includes a cassette body having a first recess which, in cross section, has a circle segment shape defining a circular arc. The first recess permits the wheel of the peristaltic pump to engage therein. An aspiration line transports aspirated fluid via the pump. A second recess along the circular arc of the circle segment shape has a wall forming a fluid channel. The fluid channel has a first end connected to the aspiration line and a second end connected to a collection container supply line. An elastic cover covers the channel and is held to ensure a constant spacing of the cover to the second recess to permit fluid from the aspiration line to be transported through the channel to the container supply line via the wheel acting on the cover. | 07-31-2014 |
20140211306 | FLUORESCENCE OBSERVATION SYSTEM AND SET OF FILTERS - A set of filters for fluorescence observation comprises an illumination light filter and an observation light filter, wherein the following is holds: | 07-31-2014 |
20140194860 | OPHTHALMOLOGIC LASER DEVICE AND METHOD FOR PREVENTING AND TREATING AFTERCATARACT - An ophthalmologic laser device includes a pulsed laser configured to produce radiation focused along at treatment beam path. A variably adjustable beam deflector unit and a focusing lens system are disposed in the treatment beam path. The deflector unit is configured to focus the radiation in different target volumes. Measuring equipment is configured to determine a shape and position of optical interfaces along a detection beam path. A control unit is configured to control the laser and the deflector unit and to implement steps including determining a shape and position of an interface of a membrane of a capsular bag of an eye located in a treatment area using the measuring equipment, determining coordinates of a target volume such that, on irradiation of the target volume, a pressure wave runs from the target volume to the anterior or posterior membrane, and adjusting the deflector unit to the target determined volume. | 07-10-2014 |
20140192317 | METHOD FOR THE PRE-OPERATIVE SELECTION OF AN INTRAOCULAR LENS TO BE IMPLANTED IN AN EYE - A method for the preoperative selection of an intraocular lens to optimise the results of refractive surgery on the eye. On the basis of an eye model comprising the individual biometric parameters of the eye, potentially suitable IOLs are selected on the basis of their optical parameters such as optical power, asphericity and toricity, and the residual refraction of potentially suitable IOLs is calculated using ray tracing. Various metrics, preferably retinal image metrics, are used to calculate the residual refraction and in order to improve the selection, at least one additional parameter is taken into consideration for the calculation, said calculation taking the postoperative effects of the selected IOL and/or of the surgical technique used into account. | 07-10-2014 |
20140180162 | METHOD FOR DETERMINING THE AZIMUTHAL ORIENTATION OF A PATIENT EYE AND EYE SURGICAL APPARATUS THEREFOR - An eye surgery apparatus has imaging optics for generating an observation image of a patient eye. A device determines the azimuthal orientation of the patient eye with respect to a reference which is fixed with respect to the patient eye. The device includes a display unit for simultaneously displaying a section of an observation image of the eye and a reference image thereof. An input interface permits an observer to move the displayed section of the observation image relative to the displayed section of the reference image. A measuring system determines the azimuthal orientation of the observation image and reference image. A computer program calculates the center of the limbus of the observation image and reference image. The display unit displays the pixels of the observation image of the patient eye with polar coordinates. The pixels of the reference image of the patient eye are displayed with polar coordinates. | 06-26-2014 |
20140155875 | AFTER-TREATMENT OF REFRACTION CORRECTION BY OPHTHALMIC SURGERY - A planning system for generating control data, a treatment device for ophthalmic surgery to correct refraction, and a method for generating control data for such a treatment device, by which method it is easily possible to continue an interrupted treatment or correct a previous treatment. To this end, the planning system has calculating means for defining a corneal incision surface, wherein the calculating means determine the new corneal incision surface such that the existing corneal incision surface is incised by at least a part of the new corneal incision surface at an angle of between 60° and 120°. | 06-05-2014 |
20140128857 | METHOD FOR EYE SURGERY - A planning unit produces control data for a treatment device for eye surgery which produces at least two cutting planes in a cornea of the eye using a laser unit. The planning unit includes a calculation module for establishing cornea cutting planes and is configured to establish the cornea cutting planes based on data of a refraction correction. The cornea cutting planes are determined so as to include a cap cut, a lenticule cut, a first access cut for accessing the cap cut, and a second access cut for accessing the lenticule cut. The planning unit is also configured to produce a control data set for actuating the laser unit for the cornea cutting planes. | 05-08-2014 |
20140128855 | EYE SURGICAL PROCEDURE - A planning system generates control data for a treatment device for eye surgery that creates at least two incision surfaces in the cornea using a laser apparatus. The planning system includes a computation device configured to specify the cornea incision surfaces based on data of a refractive correction. The cornea incision surfaces include an access incision and a cap incision, with the access incision having a smaller diameter than the cap incision. The computation device being configured to generate a control data record for the cornea incision surfaces for purposes of controlling the laser apparatus. | 05-08-2014 |
20140125955 | METHOD FOR OPTIMIZED PREDICTION OF THE POSTOPERATIVE ANATOMICAL POSITION OF AN INTRAOCULAR LENS IMPLANTED IN A PSEUDOPAKIC EYE - Postoperative lens position is predicted on the basis of known measured values, such as the corneal thickness, the depth of the anterior chamber, the eye length, and the distances of the capsular bag equator and/or of the lens haptic from the anterior surface of the lens. In addition, the calculation also takes into account the attitude of the intraocular lens, for which purpose additional parameters of the pseudophakic eye are used that have not previously been taken into consideration.; The proposed method is suitable for a more exact prediction of the strength and nature of an intraocular lens to be implanted in a pseudophakic eye in the context of cataract surgery or of a refractive intervention. The method is based on the use of suitable calculation methods, e.g. geometric optical formulae, or of ray tracing. | 05-08-2014 |
20140118696 | OPHTHALMOLOGIC VISUALIZATION SYSTEM - A method determines the position and/or radius of the limbus and/or the position and/or radius of the pupil of a patient eye. In the method, an image of the patient eye is obtained and a plurality of different ring-shaped comparison objects having respective radii and respective centers are provided. The image is correlated with the plurality of comparison objects to yield a local best match between the image and the comparison objects when there is a coincidence of one of the ring-shaped comparison objects and a ring-shaped jump in brightness in the image having the same radius and the same center. The comparison objects having a local best match with the image are determined. Thereafter, the position of the center of the comparison object having a local best match with the image is selected as the position of the center of the limbus and/or the position of the center of the pupil. | 05-01-2014 |
20140114295 | OPTICAL SYSTEM FOR A LASER THERAPY INSTRUMENT - An optical system for a laser therapy instrument for the application of laser radiation on and in the eye, includes a femtosecond laser, an objective. The objective or at least one lens or lens group of the objective is shiftable in the direction of the optical axis being intended for shifting of the focus position from the region of the cornea to the region of the crystalline lens and vice versa. The optical system may include at least two optical assemblies designed for the axial variation of the focus of the therapeutic laser radiation, with the focus variation range Δz differing between the individual assemblies and a changing device, designed for the insertion of any one of these assemblies into the therapeutic laser beam path at a time. | 04-24-2014 |
20140094711 | OPHTHALMOLOGICAL DEVICE - An ophthalmic instrument for the application of laser radiation in a patient's eye, particularly for the examination and/or surgical laser treatment of the cornea and the lens of the eye, includes a femtosecond laser, an objective and optical assemblies. The optical assemblies are arranged in front of the objective, and selectively vary the focus position in the coordinate direction X,Y and Z either within the region of the cornea or within the region of the lens of the eye. The objective or at least one lens group is movable relative to the eye. The variation of the position of the lens group or objective shifts the focus position from the cornea to the lens of the eye and vice versa. | 04-03-2014 |
20140092363 | PROCESS FOR RELIABLY DETERMINING THE AXIAL LENGTH OF AN EYE - A method for reliably determining the axial length of an eye uses optical coherence tomography (OCT), where the eye is aligned with a fixation mark so that the optical axis of the measuring instrument coincides at least approximately with a visual axis of the eye. The axial length is determined from at least one B-scan taken in an initial AS mode (anterior segment mode) and the axial length is also determined from at least one B-scan taken in a second RS mode (retina segment mode). A resultant reliable axial length of the eye is determined using the axial lengths from the AS and RS modes, where available and where possible, or the process is ended without a resultant axial length. | 04-03-2014 |
20140088574 | FEMTOSESCOND LASER SYSTEM FOR THE EXACT MANIPULATION OF MATERIAL AND TISSUES - A device for the exact manipulation of material, especially of organic material, includes a pulsed laser system with a radiation source, said radiation source being a cavity-dumped fs oscillator. | 03-27-2014 |
20140078468 | SYSTEM FOR DETERMINING THE TOPOGRAPHY OF THE CORNEA OF AN EYE - A system for determining the surface shape of the cornea of an eye by analyzing the reflection of a spatially distributed ring pattern. The system includes an element for generating a ring pattern, an illuminating unit, an image capturing unit, and a control and analyzing unit. The element for generating rings is a fresneled axicon with annular structures of different radii. Furthermore, an optical element for illuminating the entire surface of the fresneled axicon with plane waves and an optical element for separating the illuminating and detecting beam path are arranged between the illuminating unit and the fresneled axicon. Furthermore, the image capturing unit consisting of an imaging system and an image sensor is designed for a telecentric distance-independent image detection. | 03-20-2014 |
20140078465 | METHOD FOR DETERMINING AT LEAST ONE OPTICAL PROPERTY OF A PATIENT EYE WITH AN INTRAOCULAR LENS - A method determines an optical property (S, C) of a patient eye with an intraocular lens. The patient eye and the intraocular lens define a system. In the method, a measured value of the optical property of the system is determined at a measurement time (t | 03-20-2014 |
20140063627 | ADJUSTING DEVICE FOR AN OPTICAL SYSTEM - An adjusting device for an optical system has a first slider for a first optical element, which is arranged displaceably along an axial direction, a second slider for a second optical element, which is arranged displaceably along the axial direction, a control cam contour fixed in relation to the axial direction, a coupler between the first slider, the second slider and the cam contour, and a force element to exert force between the first slider and the second slider, so that the coupler is in contact with the first slider at a first point, is in contact with the second slider at a second point and is in contact with the control cam contour at a third point, the coupler including a first lever arm formed between the first and third points, and the coupler including a second lever arm formed between the second and third points. | 03-06-2014 |
20140052113 | INSTRUMENT SYSTEM AND PROCEDURE FOR PHACOEMULSIFICATION - An instrument system for phacoemulsification includes a femto- or picosecond laser device configured to dissect a lens of a patient's eye into lens fragments, open an anterior capsule of the lens of the eye, and make an incision in the eyeball so as to provide access to the lens of the eye. The system also includes device for fragmenting and aspirating the lens fragments through the access incision. A monitoring device is provided for monitoring results achieved by the phacoemulsification. A control device is configured to control the femto- or picosecond laser device and the device for fragmenting and aspirating the lens fragments, subject to parameters of the eye to be treated or of given surgical steps. | 02-20-2014 |
20140049816 | Surgical Microscope Objective Having an Adjustable Focal Intercept - A surgical microscope objective has an adjustable focal intercept and defines an optical axis. The objective has an objective body wherein a negative member is fixed and in which a positive member can be displaced. The negative member faces toward the object and has a lateral edge. The positive member is held in a frame, which is guided on a first guiding section formed on the objective body so it can move in the direction of the optical axis using a first guiding part. The positive member is guided on a second guiding section, which is formed on the objective body, using a second guiding part connected to the frame of the positive member and movable between the lateral edge of the negative member and the objective body. The second guiding part is offset from the first guiding part in the direction of the optical axis facing the negative member. | 02-20-2014 |
20140049633 | IMAGING SYSTEM AND IMAGING METHOD - An imaging system with an imaging lens system for imaging an object into an image plane is disclosed. The imaging lens system contains an optical component for a higher depth of field, of which the refractive power is alterable and the optical effect remains rotation-symmetrical. | 02-20-2014 |
20140046308 | LASER INSTRUMENT FOR EYE THERAPY - A laser instrument for therapy on the human eye, designed for surgery of the cornea, the sclera, the vitreous body or the crystalline lens, especially suitable for use in immediate succession with other instruments for eye diagnosis or eye therapy, in such a way that during the alternating use of the various instruments, the eye or at least the patient preferably remains in a predetermined position and alignment within one and the same treatment area. | 02-13-2014 |
20140014636 | APPARATUS AND METHOD FOR MATERIAL PROCESSING USING A TRANSPARENT CONTACT ELEMENT - A method of preparing an apparatus for material processing by generating optical breakthroughs in an object. The apparatus includes a variable focus adjustment device. A contact element is mounted to the apparatus, the contact element has a curved contact surface having a previously known shape. The position of the contact surface is determined prior to processing the object, by focusing measurement laser radiation near or on the surface by the variable focus adjustment device, and the focus position is adjusted in a measurement surface intersecting the expected position of the contact surface. Radiation from the focus of the measurement laser radiation is confocally detected. The position of points of intersection between the measurement surface and the contact surface is determined from the confocally detected radiation to determine the position of the contact surface from the position of the points of intersection and the previously known shape of the contact surface. | 01-16-2014 |
20140009825 | Tube for a Surgical Microscope - A tube of a surgical microscope has a base part, intermediate part pivotable about a rotational axis on the base part, and an ocular part pivotable about a rotational axis on the intermediate part. An imaging beam path passes through the base part, intermediate part and ocular part. The tube has a tube lens system which transfers a parallel imaging beam path into an intermediate image. The parallel imaging beam path enters via an opening in a connecting piece of the base part. The tube has a first mirror movable about the rotational axis on the base part and a further mirror movable on the intermediate part about the rotational axis. The first mirror directs the imaging beam path to the further mirror. The first mirror and further mirror are mounted in the imaging beam path between a lens unit having positive refractive power and a lens unit having negative refractive power. | 01-09-2014 |
20130335706 | DEVICE FOR INTERFEROMETRICALLY MEASURING THE EYE LENGTH AND THE ANTERIOR EYE SEGMENT - The invention relates to a solution for interferometrically measuring the eye length and the anterior eye segment after the optical axis of the measuring system has been aligned with the optical axis of an eye. The device according to the invention for interferometrically measuring the eye length and the anterior eye segment consists of an illumination source, at least one interferometric measuring array with external reference, diverse optical imaging systems, and a control and evaluation unit. The illumination source has high spatial coherence and low coherence of time. Preferably, light is emitted by the illumination device from the NIR range, having a wavelength of 700-1000 nm, for example. Furthermore, an optical imaging system is arranged in front of the eye such that the illumination light impinges on the eye as a nearly collimated beam. | 12-19-2013 |
20130313382 | STAND FOR A MEDICAL DEVICE - The invention relates to a stand for a medical device. The stand includes a first support arm and a second support arm, which is connected to the first support arm via a first joint connection having a first degree of freedom of motion and on which the medical device can be held. The first joint connection has a first switching device, which can be put into a first switching state and into a second switching state, wherein, in the first switching state, the first degree of freedom of motion is blocked or disabled and wherein, in the second switching state, the first degree of freedom of motion is open or enabled. | 11-28-2013 |
20130308097 | OPTIMIZED DEVICE FOR SWEPT SOURCE OPTICAL COHERENCE DOMAIN REFLECTOMETRY AND TOMOGRAPHY - Optimized device for swept source optical coherence domain reflectometry and tomography. In the coherence-optical device, light, with the aid of an interferometer, is used for distance-measuring and imaging purposes on reflecting and scattering areas of the human eye. The optimized device according to the invention consists of includes a tunable light source, matched to the sought-after measurement region ZOCT, with a resonator length LR, an interferometric measurement arrangement, a data capturing unit for capturing the light portions scattered back from the sample and a data processing unit. Here the resonator length LR of the tunable light source is matched not only to the sought-after measurement region ZOCT, but also to the entire interferometric measurement arrangement such that disturbance points present in the interferometric measurement arrangement cannot create disturbance signals in the sought-after measurement region ZOCT. | 11-21-2013 |
20130307953 | SYSTEM FOR VISUALIZING TISSUE IN A SURGICAL REGION - The invention relates to a system for visualizing characteristic tissue with a colorant in a surgical region. The system contains a detection unit which detects light from at least one object point in the surgical region. The system has a computer unit which is connected to the detection unit and drives a visualization unit which displays an image of an area in the surgical region. The computer unit determines the color coordinate in a color space with respect to the light from a point from the object point in the surgical region. Depending on the position of the color coordinate determined with respect to the object point, the computer unit calculates a color coordinate information (“0”, “1”) for controlling the visualization unit by comparing information concerning the determined color coordinate of the object point with information concerning a characteristic reference color coordinate. | 11-21-2013 |
20130301009 | METHOD FOR THE MODEL-BASED DETERMINATION OF THE BIOMETRY OF EYES - For the model-based determination of the biometry of eyes, the eye is illuminated by a light source via a scanning unit, the focus of the measuring light beam in the eye is moved or shifted laterally and/or axially via an adjusting device and the light fractions back-scattered by the boundary surfaces and from the tissue of the eye via an interferometer are detected by a sensor and relayed to a control and evaluation unit by which a parametric eye model which describes at least two boundary surfaces present in the eye is adapted to the scan or scans. The invention relates to the field of ophthalmology and serves in particular for the optical determination of the biometry of eyes by application of two-dimensional optical coherence tomography images. However, the method is not limited to the use of coherence tomography nor to the utilisation of optical measurements. | 11-14-2013 |
20130297017 | INTRAOCULAR LENS PROVIDED FOR IMPLANTATION INTO AN EYE AND DEVICE FOR CHANGING THE OPTICAL EFFECT OF AN IMPLANTED INTRAOCULAR LENS - An intraocular lens provided for implantation into an eye, includes a lens body having a central region, haptics for holding the intraocular lens in place within the eye after implantation, and an activatable zone outside the central region. After implantation of the intraocular lens into the eye, the lens body is deformed in the central region and/or at least one of the position, the rotation or the tilt of the intraocular lens within the eye changes upon irradiating only the activatable zone with laser radiation. | 11-07-2013 |
20130286353 | ASSEMBLY AND METHOD FOR THE AUTOMATIC ROUGH POSITIONING OF OPHTHALMOLOGICAL EQUIPMENT - A solution for the individual automatic rough positioning of ophthalmological equipment with respect to a to ensure the diagnostic or therapeutic treatment of the patient. The assembly includes a positioning aid and a control unit for the automatic alignment of the axis of vision of the eye with the optical axis of the ophthalmological equipment. The positioning aid includes a chin rest and a forehead support which have corresponding controllable actuating devices. The assembly has an additional measuring device for recording the geometry of the face of the patient. | 10-31-2013 |
20130265637 | STEREOSCOPIC MICROSCOPE - A stereoscopic microscopic providing at least one pair of stereoscopic optical paths comprises an objective system, a first focusing lens having a first optical refractive power and a second focusing lens having a second optical refractive power and at least one actuator. The first optical refractive power and the second optical refractive have different signs. The objective system and the first and second focusing lenses are commonly traversed by the at least one pair of stereoscopic optical paths, respectively. The actuator shifts at least one of these first and second focusing lenses along the at least one pair of stereoscopic optical paths to change the working distance and/or to vary an optical refractive power of at least one of these first and second focusing lenses. The first focusing lens is immediately neighboring the objective system along the at least one pair of stereoscopic optical paths. | 10-10-2013 |
20130265549 | METHOD FOR DETERMINING AT LEAST ONE DIAGNOSIS OR RISK ASSESSMENT PARAMETER RELATED TO AMD - A method for Determining at Least One Parameter for Diagnosis or Risk Assessment of a Disease, including AMD. The distribution of the macular pigment MP of an eye and at least one area A whose bordering line corresponds to a constant optical density MPD and/or concentration MPC of MP is determined by an analysis unit. The bordering line is subjected to a quantitative shape description. At least one parameter DP, suitable for diagnosing a disease and/or the risk of a disease is derived from the quantitative shape description of the bordering line of the areas A. The method is provided for diagnosis or risk assessment but may also be used in the context of treatment of macular pigment deficiency phenomena to select the required supplements. This method, based on the determination of the fractal dimension, is also suitable for diagnosing other diseases such as edemas, actinomycoses, atrophies or lesions. | 10-10-2013 |
20130258458 | VARIOSCOPE OPTICAL UNIT AND MICROSCOPE HAVING A VARIOSCOPE OPTICAL UNIT - A varioscope optical unit has a positive member ( | 10-03-2013 |
20130242259 | METHOD AND DEVICE FOR RECORDING AND DISPLAYING AN OCT WHOLE-EYE SCAN - The eye is illuminated by a variable laser light source with a measurement range corresponding to the eye length, wherein the focus of the laser beam in the eye can be shifted laterally and/or axially by an adjustment mechanism, and the light fractions back-scattered from the sample are captured via an interferometer by a data acquisition unit and forwarded to a data processing unit. In the data processing unit, an OCT whole-eye scan is combined with at least one or several further overlapping tomographic part-eye or whole-eye scans. Reference information is used to register the first whole-eye scan with the further part-eye or whole-eye scans, and the combined whole-eye scan is evaluated and/or displayed on a user surface. | 09-19-2013 |
20130237900 | OPHTHALMIC SURGICAL SYSTEM AND CONTROL APPARATUS THEREFOR - A control apparatus for an ophthalmic surgical system includes a measuring device with which, at a first time point and a second time point, the volume of an anterior chamber of the eye of an eye to be treated by phacoemulsification is determined. A control unit, dependent on the determined volume at the first time point and at the second time point, calculates a control variable to control a pressure or a volumetric flow rate in an irrigation line and/or an aspiration line of the ophthalmic surgical system. | 09-12-2013 |
20130231644 | MULTIPLE-SPOT LASER REFRACTIVE OPHTHALMIC SURGERY - An apparatus for refractive ophthalmic surgery by laser radiation including a source of radiation which emits a processing beam a beam path for focusing and scanning. The beam path focuses the processing beam into a cornea of an eye and shifts a position of a focus therein. A beam splitting device generates several foci in the cornea and divides the processing beam into a primary beam and at least one secondary beam. The primary and secondary beams have substantially the same cross section as the processing beam which is incident on the beam splitting device and the beam-splitting device introduces a separation between the primary and secondary beams. The primary and secondary beams expand in the beam path. A contact glass induces a pre-defined geometric boundary surface at the cornea. | 09-05-2013 |
20130226072 | OPHTHALMIC SURGICAL SYSTEM AND CONTROL APPARATUS THEREFOR - A control apparatus for an ophthalmic surgical system for phacoemulsification of an eye lens has an optical system for generating an object region wherein at least part of the eye lens and part of a needle of a phacoemulsification handpiece are arranged. The handpiece is provided with an aspiration line; an image evaluation unit is suitable for evaluating the generated image in such a way that an evaluation variable, dependent on an occlusion of the aspiration line, is determined, which is a kinematic measurement variable and/or a geometric measurement variable and/or an optical measurement variable of a particle, produced by emulsification, of the eye lens to be treated. A control unit, dependent on the evaluation variable supplied thereto, determines a control variable to control an absolute value of a parameter of the ophthalmic surgical system. | 08-29-2013 |
20130222763 | FUNDUS CAMERA WITH STRIP-SHAPED PUPIL DIVISION, AND METHOD FOR RECORDING ARTIFACT-FREE, HIGH-RESOLUTION FUNDUS IMAGES - A fundus camera for the recording of high-resolution colour images of the fundus of non-dark-adapted eyes, and without the use of a mydriatic. The fundus camera has a strip-shaped pupil division, and includes a coherent or incoherent illumination source with illumination optics, a deflection mirror and an ophthalmoscope lens for illuminating the eye, detection optics and a detector for detecting the light reflected by the eye, and a control and evaluation unit. The deflection mirror has a strip shape, and the spatially resolving detector can be activated and read out in sectors. The control and evaluation unit connects the data read out in sectors in the form of a bright image from the detector and produce a resulting fundus image. The fundus camera records images of the fundus when the eyes are not dark-adapted for this purpose and no mydriatic has been used. | 08-29-2013 |
20130218168 | OPHTHALMIC SURGICAL SYSTEM AND CONTROL ARRANGEMENT THEREFOR - A control arrangement for an ophthalmic surgical system for phacoemulsification of an eye lens includes an optical system for generating an image of an object region. At least part of the eye lens to be emulsified and part of a needle of a phacoemulsification handpiece can be arranged in the image. An image evaluation unit evaluates the generated image in such a way that an evaluation variable is generated which is dependent on a property of a particle produced by phacoemulsification of the eye lens or is dependent on a relation of the particle to its surroundings. A control unit generates a control variable in dependence upon the evaluation variable and, with the control variable, the control unit controls an absolute value of ultrasound energy which is supplied to the phacoemulsification handpiece by an energy source for phacoemulsification of the eye lens. | 08-22-2013 |
20130188843 | METHOD AND DEVICE FOR DETERMINING VARIOUS BIOMETRIC PARAMETERS OF AN EYE BY INTERFEROMETRY - Determination of biometric parameters of an eye, in which the optical axis of the biometric measurement system is aligned to the optical axis of an eye. The device includes an interferometry measuring arrangement having a measurement light source and a measurement sensor, a fixation light source for capturing the eye with the reflexes that arise, an image sensor, and lens for detecting volume scattered light and an analysis unit for determining the angular deviation of the optical axis of the eye from the optical axis of the biometric measurement system. The analysis unit compares determined angular deviation to a predefined tolerance and, laterally displaces fixation marks on the basis of the calculated angular deviation, or of initiating the biometric measurement. | 07-25-2013 |
20130188385 | COUPLING-IN APPARATUS FOR COUPLING LIGHT FROM A LIGHT-EMITTING DIODE INTO A FIBER ENTRY END AND LIGHT-SOURCE ARRANGEMENT FITTED THEREWITH - A coupling-in apparatus is provided for coupling light from a light-emitting diode ( | 07-25-2013 |
20130178839 | CONTROL DATA GENERATION FOR THE EYE-SURGICAL TREATMENT OF DEFECTIVE VISION - A method for generating control data to control a laser device for correcting defective vision. A cut surface is specified which is curved, has a vertex and an edge, and is to be created in the eye. One or more paths, along which a focus of the laser radiation is to be adjusted, are defined for the control data and are selected such that they lie on or near the cut surface. To select the paths, a reference plane, preferably perpendicular, with respect to a direction of incidence of the laser radiation is determined, and different displacement positions are determined for said reference plane from the vertex to the edge of the cut surface. Multiple axes or semi-axes are determined for each displacement position. Intersections of the axes are connected into closed curves which are concentric or form a spiral. | 07-11-2013 |
20130170806 | DEVICE FOR HOMOGENIZING A LASER-BEAM PROFILE - A device for homogenizing a laser-beam profile and a method for focussing and homogenizing a laser beam in laser photocoagulation for coagulating organic tissue, for example in the eye of a living organism. | 07-04-2013 |
20130131652 | DEVICE AND METHOD FOR VITREOUS HUMOR SURGERY - A device and a method for the femtosecond laser surgery of tissue, especially in the vitreous humor of the eye. The device of includes an ultrashort pulse laser with pulse widths in the range of approximately 10 fs-1 ps, especially approximately 300 fs, pulse energies in the range of approximately 5 nJ-5μJ, especially approximately 1-2 μJ and pulse repetition rates of approximately 10 kHz-10 MHz, especially 500 kHz. The laser system is coupled to a scanner system which allows the spatial variation of the focus in three dimensions (x, y and z). In addition to the therapeutic laser/scanner optical system the device includes a navigation system. | 05-23-2013 |
20130120711 | OCT-BASED OPHTHALMOLOGICAL MEASURING SYSTEM - An ophthalmological measuring system for determining distances and/or for tomographic imaging of ocular structures, based on an OCT method. The measuring system includes a light source with a spectral centroid (λ), an interferometric measuring device, a scanner system, which in addition to the lateral deflection of the sample beam also has axial modulations with a frequency (f) in the sample arm, and a control and evaluation unit. The scanner performs a lateral, two-dimensional deflection of the sample beam with the aid of one or even two separate mirror elements and can in particular have axial modulation amplitudes z | 05-16-2013 |
20130119029 | DEVICE AND METHOD FOR MATERIAL PROCESSING BY MEANS OF LASER RADIATION - A device for material processing by laser radiation, including a source of laser radiation emitting pulsed laser radiation for interaction with the material, optics focusing the pulsed processing laser radiation to a center of interaction in the material, and a scanning unit shifting the positions of the center of interaction within the material. Each processing laser pulse interacting with the material in a zone surrounding the center of interaction assigned to the laser pulse so that material is separated in the zones of interaction. A control unit controls the scanning unit and the source of laser radiation such that a cut surface is produced in the material by sequential arrangement of zones of interaction. The control unit controls the source of laser radiation and the scanning unit such that adjacent centers of interaction are located at a spatial distance a ≦10 μm from each other. | 05-16-2013 |
20130107209 | SYSTEM FOR THE IMPROVED IMAGING OF EYE STRUCTURES | 05-02-2013 |
20130085481 | OPHTHALMOLOGY APPLIANCE FOR PHOTOCOAGULATION OR PHOTOTHERAPY, AND METHOD FOR OPERATING SUCH AN APPLIANCE - A device intended to permit photocoagulation or phototherapy at low cost and in a shorter time. For this purpose, an ophthalmology appliance includes a radiation source having several discrete individual emitters. The therapy beam path leading from the radiation source to the treatment area projects an image of at least respective portions of different individual emitters simultaneously onto surfaces spaced apart from each other in the treatment area. This permits simultaneous generation of several coagulation foci and dispenses with the need for electromechanical beam-deflecting units, which permits a shorter treatment time. | 04-04-2013 |
20130085480 | DEVICE AND METHOD FOR CONTROLLING A LASER SYSTEM - A device and a method for controlling a laser system for the treatment of the eye lens by means of laser-induced disruptions. The laser system includes a femtosecond laser and a deflection unit for directing the laser beam and a detection device for detecting a value characteristic of the occurrence of disruptions being provided. The detection device is connected to the control device and the control device is adapted to determine a pulse energy for the laser system from the characteristic value and to actuate the laser accordingly. | 04-04-2013 |
20130083289 | Module for Transmitting a Light Beam and Surgical Microscope with Deflecting Element and Fundus Imaging System - The invention is directed to a module for transmitting a light beam ( | 04-04-2013 |
20130072917 | DEVICE AND METHOD FOR CATARACT SURGERY - Improvements in respect of performing cataract surgery, and the result thereof, by application of a laser system. A device for cataract surgery, includes a surgical microscope or stereo microscope and a laser source. A module, consisting of a laser-coupling/deflecting unit, a laser-scan unit, and a focusing unit, can be attached to the surgical microscope or stereo microscope, in which at least one of these units can selectively be introduced between the surgical microscope and eye, and in which the focusing unit can scan a depth-of-focus range of greater than 1 mm. | 03-21-2013 |
20130058460 | METHOD OF GENERATING AND/OR PROVIDING DATA FOR TISSUE TREATMENT - A method of generating and/or providing data ( | 03-07-2013 |
20130050640 | Multifocal Lens - A multifocal lens has a number n>2 of principal powers, of which at least one principal power is refractive and at least one principal power is diffractive. The multifocal lens includes a first lens portion having at least one first annular zone and at least a second lens portion having at least one second annular zone, wherein the zones each have at least one main sub-zone and at least one phase sub-zone. For forming the n principal powers, a maximum of n−1 lens portions are combined, and an averaged refractive power of a zone of the first lens portion is equal to an averaged refractive power of a zone of the second lens portion. | 02-28-2013 |
20120310337 | METHOD AND ARRANGEMENT FOR SELECTING AN IOL AND/OR THE SURGICAL PARAMETERS WITHIN THE FRAMEWORK OF THE IOL IMPLANTATION ON THE EYE - Selection of an appropriate intraocular lens (IOL) and/or the applicable surgical parameters for optimizing the results of refractive procedures on the eye. Features of the IOL are crucial for the selection and/or adjustment of the optimal IOL, but so is the IOL selection method (and parameters) from a surgical perspective. For the method, corresponding output parameters are determined from predetermined, estimated, or measured input parameters and/or their mean values, wherein at least two input parameters are varied with one another and which have at least one input parameter as a distribution function. The resulting function is optimized by means of corresponding target values and the determined distribution function of one or more output parameters is used as a decision aid. The present solution is used for selecting an appropriate IOL and/or the applicable surgical parameters and is applicable in the field of eye surgery for implanting IOLs. | 12-06-2012 |
20120300294 | FLUORESCENCE OBSERVATION SYSTEM AND SET OF FILTERS - A fluorescence observation system, a method for performing a fluorescence observation, and a set of filters that can be used in such system and method are provided. | 11-29-2012 |
20120287398 | HEADS-UP VISION ANALYZER - A binocular vision analyzer apparatus is used for determining a prescription of visual aids for the eyes of an individual. The apparatus includes first and second targets respectively corresponding to the first and second eyes of the individual and at least one illuminator unit for illuminating the targets. An optical system is configured to present respective virtual images of the first and second targets so as to be viewable by the respective first and second eyes. At least one beam splitter disposed in front of the first and second eyes directs the virtual images toward the respective eyes. The apparatus also includes first and second spherical correction devices and first and second cylindrical correction devices that respectively correspond to the first and second eyes. | 11-15-2012 |
20120249771 | MICROSCOPY SYSTEM, MICROSCOPY METHOD AND METHOD OF TREATING AN ANEURYSM - A microscopy system and a microscopy method are provided for observing a fluorescent substance accumulated in a tissue. The microscopy system comprises a filter allowing to observe the tissue at a same time both with visible light and with fluorescent light. It is possible to observe a series of previously recorded fluorescent light images in superposition with the visible light images. An end of the series of images may be automatically determined. A thermal protective filter may be inserted into a beam path of an illuminating system at such automatically determined end of the series. | 10-04-2012 |
20120229766 | METHOD AND DEVICE FOR DETECTING DEPOSITS IN THE EYE - A method and devices for detecting deposits, in particular amyloid plaques, in the eye, in particular in the human eye. The subject is an optical method for detecting deposits, in particular β-amyloid, in the retina, which is locally resolved and wherein the local resolution is better than the layer thickness of individual layers of the retina. The invention includes a device for optically detecting β-amyloid in the retina, which generates a locally resolved image of the retina and wherein the local resolution is better than the layer thickness of individual layers of the retina. | 09-13-2012 |
20120229605 | OPTICAL OBSERVATION INSTRUMENT WITH AT LEAST TWO OPTICAL TRANSMISSION CHANNELS THAT RESPECTIVELY HAVE ONE PARTIAL RAY PATH - An optical observation instrument has two optical transmission channels for transmitting two partial ray bundles ( | 09-13-2012 |
20120226267 | Surgical Device and Surgical Method - A surgical instrument system for ophthalmic surgery in an eye is provided, comprising: an OCT apparatus including an interferometer; an optical fiber coupled to the OCT apparatus and extending a probe arm of the interferometer; a hand tool comprising: a hand piece, a tube extending away from the hand piece and comprising a distal end portion having a longitudinal axis, wherein a distal portion of the optical fiber is received within the tube; a beam emitter coupled to a tip end of the optical fiber and configured to emit an OCT measuring beam into an emission direction; and an actuator configured to change the emission direction of the OCT measuring beam relative to a tip end of the distal end portion. | 09-06-2012 |
20120176769 | ILLUMINATION DEVICE AND MEDICAL-OPTICAL OBSERVATION INSTRUMENT - An illumination device for a medical-optical monitoring apparatus illuminates a monitored object ( | 07-12-2012 |
20120169995 | METHOD AND DEVICE FOR PRODUCING HIGH-QUALITY FUNDUS IMAGES - To produce a color fundus image, the eye is illuminated with light pulses of defined wavelengths. Light reflected is recorded by a sensor and transmitted to a control unit. At least three monochromatic images at very short temporal intervals and a dark image of the fundus are recorded. After activation of a spectral-selective optical element, a color intensity distribution of the fundus is recorded by the sensor at white illumination. The monochromatic images are combined by the control unit to obtain a resulting color fundus image, wherein the color intensity distribution is used for the correction of color composition and the dark image is used for taking into account the noise of the sensor. The solution permits monitoring, documenting and/or diagnosing of the fundus and can also be executed with ophthalmological systems based on the principle of optical coherence and/or confocal imaging. | 07-05-2012 |
20120165662 | MEDICAL SYSTEMS AND METHODS - This disclosure generally relates to medical systems and methods. In one aspect of the invention, a method includes determining a fluorescent light intensity at one or more points on each of multiple recorded images, and producing an image based on the determined fluorescent light intensity at the one or more points. | 06-28-2012 |
20120150159 | METHOD FOR MARKING COAGULATION SITES OF A RETINA AND SYSTEM FOR COAGULATING THE RETINA - A method for marking coagulation sites on a retina by application of a light source including: projecting a serial spot sequence from a sequential, one-dimensional series of spots on the retina, wherein the individual spots indicate the coagulation sites; waiting for confirmation of the sequence of individual spots; after confirming, recalculating an automated sequence of steps having a further serial spot sequence and projecting them on the retina according to the first step; and subsequent repeating of the second and third steps. Also, a system for coagulating the retina, having an imaging diagnostic unit, a therapy beam for coagulating coagulation sites, a pilot beam for marking the coagulation sites by a spot sequence, a beam deflecting unit for generating the spot sequence and for positioning the therapy beam, an electronic control unit for controlling the above devices, a software interface, and an interactive interface. | 06-14-2012 |
20120147460 | SYSTEM FOR WAVEFRONT ANALYSIS AND OPTICAL SYSTEM HAVING A MICROSCOPE AND A SYSTEM FOR WAVEFRONT ANALYSIS - An optical system, comprising a microscope housing having a coupling opening for a detachable coupling of an objective lens of the optical system such that the objective lens is arranged in a microscope beam path of the optical system for imaging an object region of the objective lens. The optical system further comprises an assembly. The assembly comprises an assembly housing having a coupling element for the detachable coupling of the coupling element and the coupling opening of the microscope housing; a wavefront analysis system, which provides a wavefront beam path; and a beam splitter, which is arranged in the wavefront beam path. The objective lens, the beam splitter and the wavefront analysis system are arranged such that during the coupling of the coupling opening and the coupling element, the objective lens is arranged in the microscope beam path and the object region is arranged in the wavefront beam path. | 06-14-2012 |
20120136342 | LASER DEVICE AND METHOD FOR MACHINING MATERIAL USING LASER RADIATION - Disclosed is a laser device for machining material, comprising a laser beam source which supplies pulsed laser radiation, and a variable deflection unit that introduces said laser radiation into the material at different, selectable points so as to create optical breakthroughs. The inventive laser device further comprises a pulse-selecting apparatus which modifies selected laser pulses of the pulsed laser radiation regarding at least one optical parameter in such a way that no more optical breakthroughs can be created using the modified laser pulses. | 05-31-2012 |
20120120486 | MICROSCOPY SYSTEM - A microscope system for imaging of an object that can be placed in an object plane of a microscope system includes an imaging system for providing at least one pair of optical imaging paths that include a stereoscopic angle in the object plane. The imaging system includes a first subsystem comprising a first plurality of optical lenses that are commonly traversed by both optical imaging paths of the at least one pair of optical imaging paths. The imaging system also includes a second subsystem comprising a second plurality of optical lenses that are traversed by only one optical imaging path. At least two optical lenses of the first plurality of optical lenses and at least two optical lenses of the second plurality of optical lenses are displaceable relative to one another along a common optical imaging path to respectively vary a magnification of the representation of the object. | 05-17-2012 |
20120089132 | METHOD AND DEVICE FOR NON-INVASIVE TEMPERATURE DETERMINATION IN BIOLOGICAL TISSUE TREATED WITH TREATMENT RADIATION - A method for non-invasive temperature determination in biological tissue treated with treatment radiation wherein a reaction which depends on the treatment temperature is generated and detected. Measurement radiation pulses and pulses of the treatment radiation are applied to the tissue to be treated successively, in particular in an alternating way, from the same radiation source. A device includes a radiation source, an irradiation lens system, detectors for determining a reaction and a system control suitable for controlling treatment radiation and measurement radiation pulses. The system control generates successive, in particular alternating, pulses of treatment radiation and measurement radiation pulses from one radiation source only, in particular a laser which can be modulated. | 04-12-2012 |
20120078239 | METHOD FOR INCREASING OCULAR DEPTH OF FIELD - A method for performing a corneal ablation procedure on an eye of a patient including determining a refractive correction for the eye and determining a first parameter corresponding to the refractive correction or a condition of the patient. An ablation profile is selected that includes a refractive correction component and a pre-compensating component that is selected based on the first parameter. The ablation profile is configured to promote a controlled induction of a higher order aberration, where the pre-compensating component limits the induction of the higher order aberration to be within a predefined range. The cornea is ablated using the selected ablation profile. | 03-29-2012 |
20120041429 | METHOD AND DEVICE FOR PERFORMING ONLINE ABERROMETRY IN REFRACTIVE EYE CORRECTION - A device for correcting visual defects of an eye comprises a coherent light source, a beam modification device for shaping and deflecting a beam of the coherent light source, and a wavefront analyzer device for analyzing a wavefront of an optical path in the eye. | 02-16-2012 |
20120035598 | DEVICE AND METHOD FOR PRODUCING CONTROL DATA FOR THE SURGICAL CORRECTION OF DEFECTIVE EYE VISION - A device for producing control data for a laser device for the surgical correction of defective vision. The device produces the control data such that the laser emits the laser radiation such that a volume in the cornea is isolated. The device calculates a radius of curvature R | 02-09-2012 |
20120035597 | METHOD FOR TREATING INCISION SURFACES IN A TRANSPARENT MATERIAL - A method for the surface treatment (that is, smoothing and/or sealing) of incision surfaces in a transparent material, in particular in the cornea. For this purpose, the incision surface is subjected to the radiation of a laser (for example, UV laser, preferably excimer laser, or IR laser) and/or another suitable radiation source. | 02-09-2012 |
20120016353 | APPARATUS AND METHOD FOR REMOVING A LENTICLE FROM THE CORNEA - An apparatus and method for removing a lenticle from the cornea. For this purpose, a device for liquefying the lenticle and a device for suctioning off the resulting fluid are provided. The lenticle is liquefied and the resulting fluid is then suctioned off. | 01-19-2012 |
20120016352 | OPHTHALMOLOGIC LASER SYSTEM - An ophthalmological laser system for photodisruptive irradiation of ocular tissue, including a crystalline lens or a cornea. The system includes an ultra-short pulse laser, the radiation of which is focusable as illumination light via an illumination beam path including a scanner unit and focusing optics. A control unit is programmed to execute determining irradiation control data for photodisruptions at irradiation points in an interior of the ocular tissue distributed three-dimensionally and non-equidistantly to create at least one predetermined target incision. The laser system then irradiates the ocular tissue according to the determined irradiation control data. | 01-19-2012 |
20120016351 | DEVICE AND METHOD FOR PRODUCING CONTROL DATA FOR THE SURGICAL CORRECTION OF DEFECTIVE EYE VISION - A device for producing control data for a laser device for the surgical correction of defective vision. The device produces the control data such that the laser emits the laser radiation such that a volume in the cornea is isolated. The device calculates a radius of curvature R | 01-19-2012 |
20120008651 | METHOD OF MATERIAL PROCESSING WITH LASER PULSES HAVING A LARGE SPECTRAL BANDWIDTH AND APPARATUS FOR CARRYING OUT SAID METHOD - A method and device for processing materials with laser pulses having a large spectral bandwidth and a device for carrying out said method. The aim of the invention is to create an easy, flexible method enabling universally applicable processing which can, however, be adapted to specific processing and methodological requirements. According to the invention, one or several spectral parameters of the laser pulses, i.e. the spectral amplitude and/or spectral phase and/or spectral polarization thereof, is/are specifically modified, preferably according to a measuring process variable, in order to process material or during the occurrence of said processing. The invention is used in order to process material with laser pulses having a large spectral bandwidth, particularly femto-second pulses and pico-second pulses. | 01-12-2012 |
20120008195 | MICROSCOPE SYSTEM - Microscope system for acquiring a plurality of images, comprising: a zoom system which is configured to continuously vary a magnification of the microscope system over a magnification range of the microscope system, wherein the zoom system comprises two movable zoom components, which are arranged movably along a common optical axis of the microscope system; an aperture stop, which is configured such that a plurality of different observation beam paths of the microscope system are selectable, which traverse the zoom system; wherein the aperture stop, as seen along the optical axis, is arranged between the two movable zoom components; and wherein for all values of the magnification within the magnification range, the aperture stop is located within an aperture stop range which is measured along the optical axis and which surrounds a pupil position of the microscope system. | 01-12-2012 |
20110299038 | OPHTHALMOLOGICAL MEASURING SYSTEM AND METHOD FOR CALIBRATING AND/OR ADJUSTING THE SAME - An ophthalmological measuring system, for obtaining biometric data of an eye, provided with the necessary calibration and check devices for monitoring the functionality and the calibration status. The ophthalmological measuring system includes an illumination source for illuminating an eye with light and with a sensor for recording and analyzing back-scattered or reflected light components and a controller. At least one calibration and check system integrated in the ophthalmological measuring system for monitoring the functional and calibration status is provided. A device is also provided which houses the calibration and test structures and which reads off the individual physical data therefrom by an interface. The ophthalmological measuring system is in particular provided for determining biometrical data but can also be used for ophthalmological, dermatological or other devices which require calibration and/or functional checking at regular intervals. | 12-08-2011 |
20110292395 | INTERFEROMETRIC SAMPLE MEASUREMENT - A device for the interferometric measurement of a sample, in particular the eye, including an interferometer arrangement with a first measurement beam path, through which a measurement beam falls onto the sample, and a first reference beam path, through which a reference beam runs, which is applied to the measuring beam for interference. The interferometer arrangement includes a second measuring beam path and/or second reference beam path. The optical path lengths of the second measuring beam path and/or second reference beam path are different from one of the first beam paths. The wave length difference is selected according to a distance of two measuring areas which are arranged at a distance in the depth direction of the sample. | 12-01-2011 |
20110264081 | OPHTHALMOLOGICAL LASER SYSTEM AND OPERATING METHOD - A polarization beam splitter selectively decouples detection light onto a detector such that it has a polarization direction that differs from the emitted illumination light. This enables the detection of the light scattered back in the eye lens at a high level of accuracy, since stray light from reflections at optical components of the light path is suppressed. In the generating of photo disruptions or other incisions, the ray exposure of the retina may be reduced in that the incisions being furthest away from the laser are induced first such that laminar gas inclusions with an existence duration time of at least 5 seconds result. In this manner the laser radiation propagated in the direction of the retina in further incisions are scattered and partially reflected such that the influence impinging upon the retina is reduced. | 10-27-2011 |
20110261320 | ARRANGEMENT FOR ATTAINING HIGH-PRECISION MEASUREMENTS OF AN EYE - A solution for attaining high-precision and reproducible measurements during opthalmological biometry and imaging includes an illumination unit for producing a fixation marker, a device for transmitting the light of the produced fixation marker into the eye, a measurement device and a control unit. The illumination unit includes a device for the targeted change of the beam direction of the produced fixation marker. A camera for the detection of the line of vision of the eye is connected to the control unit. The control unit determines the sufficient congruity between detected line of vision and displayed beam direction of the produced fixation marker and, in dependence of the degree of probability of the congruity, triggers a measurement. The suggested arrangement is applicable for opthalmological diagnostic devices, which exhibit a camera and a measuring system, whereby measurements can be taken in all areas of the eye. | 10-27-2011 |
20110255054 | DEVICE FOR SWEPT-SOURCE OPTICAL COHERENCE DOMAIN REFLECTOMETRY - A device for swept-source optical coherence domain reflectometry (SS OCDR) on moveable samples, particularly human eyes, for obtaining A-scans, having a measuring range according to the sample length and having a laser light source which can be adjusted by a main wave number k | 10-20-2011 |
20110251601 | OPHTHALMOLOGICAL LASER SYSTEM AND OPERATING METHOD - An ophthalmological laser system and operating method wherein laser-supported operative interventions can be achieved with higher accuracy. The cornea is irradiated with an ophthalmological laser and a detection light confocally recorded, the cornea being scanned in three-dimensions by irradiation with an illuminating laser power using a scanner unit along several directions at several points. Using the simultaneously recorded detection light the position and/or shape of a posterior boundary surface of the cornea is determined. A lamella parallel to the posterior boundary surface can then be cut. | 10-13-2011 |
20110238046 | DEVICE AND METHOD FOR CONTROLLING A LASER THERAPY OF THE EYE - A device for controlling a laser therapy of the eye, including an evaluation unit that determines an intensity of a transient temperature effect by analysis of interferometric signals obtained from the eye and a control unit that controls the laser therapy, which is based on said transient temperature effect, the control unit being connected with said evaluation unit. A method for controlling a laser therapy of the eye, includes determination of the intensity of a transient temperature effect that is utilized for the control of the laser therapy, based on the effect, by analysis of interferometric signals. | 09-29-2011 |
20110238045 | METHOD FOR CONTROLLING A DEVICE FOR TREATING THE HUMAN EYE - A method for controlling a device for the treatment or refractive correction of the human eye using an electronic data processing system provides a simple overview of the influence of all of the parameters. To this end, once the operating parameters have been determined, a graphical simulation of the operating procedure is carried out in the form of a graphical visualization. | 09-29-2011 |
20110228217 | METHOD AND DEVICE FOR INCREASING AN OPTICAL SYSTEM FOCAL DEPTH - A method for changing a property of an eye uses a continuously multifocal profile that includes a component for increasing a focal depth. The method includes calculating the component for increasing the focal depth to be rotation-symmetrical. Alternatively, or in addition, the calculating is carried out so as to optimize an encircled energy criterion over an extended range of depth. | 09-22-2011 |
20110224658 | OPHTHALMOLOGIC LASER SYSTEM AND OPERATING METHOD - An ophthalmologic laser system and an operating method. The laser system includes a laser, a scanner unit, a focusing lens and a beam splitter that directs radiation that reaches the beam splitter from the direction of the area of examination through a confocal aperture orifice onto a detector. The invention also includes a control unit with which a cornea arranged in the examination area can be irradiated by the laser at illumination laser power and detection light can be registered by the detector. The cornea is scanned in three dimensions, in that the cornea is irradiated at multiple points and detection light is registered from there. Based on the detection light, a laser cut in the cornea is identified and the form and/or position of the laser cut calculated. The invention further relates to refractive laser surgery. | 09-15-2011 |
20110208171 | METHOD AND DEVICE FOR FORMING CUT SURFACES IN A TRANSPARENT MATERIAL - A method and a device for forming cut surfaces in a transparent material, particularly in the cornea, by producing optical breakthroughs in the material by application of laser radiation focused into the material. The focal point is adjusted in three dimensions to form the cut surface by the sequential arrangement of optical perforations. The focal point is guided in such a manner that cutting is divided into at least two steps, and in at least one of the steps, the formation of the cut is carried out with a path radius that decreases in size, and in one of the steps, the cut formation is carried out with a path radius that increases in size. | 08-25-2011 |
20110205488 | METHOD, DEVICE AND ARRANGEMENT FOR MEASURING THE DYNAMIC BEHAVIOR OF AN OPTICAL SYSTEM - A method for measuring the dynamic behavior of an optical system is aimed at rendering the dynamic behavior of the optical system objectively detectable. To this end, the optical system to be measured is stimulated by stimuli whereby causing it to react, and the reaction is detected by means of a wave front analysis. | 08-25-2011 |
20110199575 | NON-REFLECTIVE IMAGING OPTICS FOR OPTICAL DEVICES, PARTICULARLY IN OPHTHALMOLOGY - Imaging optics for optical devices, with which reflections of the illumination light, which is guided through the same optical elements as the observation light, are kept from reaching the observation pupil of the imaging beam path. The non-reflective imaging optics include at least two refractive optical elements, which are utilized for illumination as well as observation. The at least two refractive optical elements are designed approximately wedge-shaped and are tilted at a random azimuth angle of at least 5° and/or are positioned off-center in the beam path to block out the single reflections of the illumination, occurring at the optical system surfaces, for the observation. The imaging optics are for optical devices, particularly in ophthalmology thought the invention is applicable to other ophthalmological devices as well as to optical devices outside of this field. | 08-18-2011 |
20110176110 | ARRANGEMENTS AND METHOD FOR MEASURING AN EYE MOVEMENT, PARTICULARLY A MOVEMENT OF THE FUNDUS OF THE EYE - In addition to a first detector for capturing a potential movement field of the eye in overview images, a second detector is used to capture a particular section of the eye in sectional images. From a displacement between two overview images and an intermediate displacement between two sectional images taken between said overview images, the eye movement is determined by linking said displacements. The sections are preferably illuminated by coherent light such that interfering light diffused on the eye produces a patch pattern. Alternatively, the sclera of the eye is illuminated with coherent light such that light diffused on the sclera produces a patch pattern, of which a particular part is captured using a spatially resolving detector in sectional images, on the basis of which an intermediate displacement is determined. | 07-21-2011 |
20110157552 | SS OCT INTERFEROMETRY FOR MEASURING A SAMPLE - An SS OCT interferometry device for measuring a sample, in particular from an eye. The device interferometrically generates a measuring signal and from the signal a depth-resolved contrast signal of the sample by spectral tuning of the central wavelength of the measurement radiation of a measuring signal, and has a control unit for this purpose. The device includes a sample motion detector, which provides a motion signal indicating movement of or in the sample, the control unit uses the motion signal to correct the measuring signal with respect to measuring errors that are caused by a movement of or in the sample before or during the generation of the depth-resolved contrast signal. | 06-30-2011 |
20110149245 | OPTICAL COHERENCE REFLECTOMETRY WITH DEPTH RESOLUTION - A device for performing distance measurements on an eye. The device includes an interferometer, focuses at least one measurement beam records backscattered radiation and interferometrically generates a measurement signal displaying structures of the eye by time-domain, spectral-domain or Fourier-domain coherence reflectometry, has an adjustment apparatus for laterally and/or axially displacing the focus in the eye or for varying a polarization state of the measurement beam and has a control apparatus which actuates the interferometer, wherein the control apparatus generates a plurality of A-scan individual signals from the backscattered radiation, combines these to an A-scan measurement signal and actuates the adjustment apparatus for displacing the position of the focus or for varying the polarization while recording the backscattered radiation from which the control apparatus generates the A-scan individual signals is being recorded. | 06-23-2011 |
20110122365 | Eye Surgery System and Methods of Preparing and Performing an Eye Surgery - A method for carrying out eye surgery comprises a comparison of images recorded before surgery with images recorded during surgery in order to generate a marker which represents a target orientation of an intraocular lens or a difference between a current orientation and the target orientation of the intraocular lens. An eye surgery system respectively comprises an imaging system which is used during a surgery and has a camera, and a diagnostic system which is used before surgery and which also has a camera. The imaging system used during surgery comprises an image processing device in order to perform a computation based on the recorded images, and in order to determine a respective orientation value, from which a representation of a marker representing the target orientation of the intraocular lens is obtained. | 05-26-2011 |
20110116040 | OPHTHALMOLOGIC APPARATUS AND METHOD FOR THE OBSERVATION, EXAMINATION, DIAGNOSIS, AND/OR TREATMENT OF AN EYE - An ophthalmologic apparatus and a method for the contactless observation, examination, treatment, and/or diagnosis of an eye. The apparatus is structurally based on a fundus camera or an ophthalmoscope. An illumination beam path extends from a first illumination source to the eye and is fitted with a perforated mirror and imaging optics, and an observation beam path extends from the eye to a detector via the imaging optics and through the perforated mirror. The arrangement additionally comprises a beam path for scanning illumination which extends from a second illumination source to the eye and is fitted with a scanning unit, a lens, and a beam splitter in addition to the imaging optics. The scanning unit that is arranged in the beam path for scanning illumination is designed as (an) electrostatically or/and galvanometrically driven bidirectional or unidirectional tilting mirror(s). | 05-19-2011 |
20110109913 | SHORT COHERENCE INTERFEROMETRY FOR MEASURING FOR MEASURING SPACINGS - A short coherence interferometer for measuring several axially spaced-apart regions of a sample, especially of an eye, which has a measuring optical path, through which the measuring radiation falls on the sample, a tunable interferometer for the axial, relative retardation of parts of the radiation, wherein the axial relative retardation is assigned to the axial spacing of the regions and a detector for producing an interference signal from interfering measurement radiation, scattered or reflected back from the sample as sample radiation. The tunable interferometer divides the sample radiation into two parts, which are axially relatively retarded and superimposed so as to interfere. During the superimposition, the tunable interferometer forms individual radiations, which represent quadrature components of the sample radiation, and the detector detects the individual radiations. | 05-12-2011 |
20110102810 | APPARATUS AND METHOD FOR MATERIAL PROCESSING USING A TRANSPARENT CONTACT ELEMENT - A method of preparing an apparatus for material processing by generating optical breakthroughs in an object. The apparatus includes a variable focus adjustment device. A contact element is mounted to the apparatus, the contact element has a curved contact surface having a previously known shape. The position of the contact surface is determined prior to processing the object, by focusing measurement laser radiation near or on the surface by the variable focus adjustment device, and the focus position is adjusted in a measurement surface intersecting the expected position of the contact surface. Radiation from the focus of the measurement laser radiation is confocally detected. The position of points of intersection between the measurement surface and the contact surface is determined from the confocally detected radiation to determine the position of the contact surface from the position of the points of intersection and the previously known shape of the contact surface. | 05-05-2011 |
20110085137 | RING LIGHT FUNDUS CAMERA - A fundus camera includes a viewing optical path, an imaging device, and an illuminating optical path including at least one LED and a pinhole mirror reflecting the at least one LED into the imaging device, wherein at least a portion of the illuminating optical path shares an optical axis with at least a portion of the viewing optical path, and wherein the at least one LED includes a plurality of LEDs disposed in a shape of a ring. | 04-14-2011 |
20110069366 | OPTICAL DEFLECTION DEVICE FOR SCANNING, OPHTHALMOLOGIC MEASUREMENT AND THERAPY SYSTEM - An optical deflection unit for targeted radiation, e.g., produced by laser or superluminescent diodes, in scanning, ophthalmological measuring and therapy systems, comprises a deflection mirror, a position sensor and a control unit, which form a control circuit for minimizing the deviation of the actual positions, detected by the position sensor, from the desired positions of the deflection mirror, whereby the optical deflection unit comprises a deflection mirror, oscillatingly movable by means of non-contacting electromagnetic drives around at least one rotation axis, and which is positioned in the direction of the, at least, one rotation axis between at least two bearings. The optical deflection unit is designed may also be used for beam guidance in high and ultrahigh vacuum installations, such as UV and EUV exposure installations for semiconductor lithography. | 03-24-2011 |
20110069279 | OPHTHALMOLOGIC BIOMETRIC OR IMAGE GENERATING SYSTEM AND METHOD FOR DETECTION AND EVALUATION OF MEASURED DATA - An ophthalmological biometric or image-producing system and method for detection and analysis of measurement data including a measurement arrangement with an illumination unit for illuminating the eye with at least one measurement beam, a signal detection unit for the detection of the light portions scattered or reflected back from the eye, a central control unit with an output unit, and a pattern generating unit which includes an optical scan unit, a control unit as well as a position sensor for measuring the realized deflections of the optical scan unit, whereby control unit, optical scan unit and position sensor can form a control circuit. Thereby, the position sensor, except for the connection within the possible control circuit, includes a connection to a unit of the measurement arrangement for optimizing measurement value logging or to the central control unit for correcting the biometric measurements or tomograms. | 03-24-2011 |
20110066143 | OPTOMETRIST CLIENT - A method of providing optometric parameters for an optometric procedure includes locating patient identification information on a central data storage by transmitting a search query from a computing device communicating with the central data storage. The search query generates a result set containing at least one patient having patient identification information substantially matching the search query. From the result set, a patient undergoing the optometric procedure is selected. An input form for this patient is then displayed with input fields corresponding to each of the optometric parameters. A qualified collector obtains the measurement values for the optometric parameters and inputs them into respective input fields. A data record containing the measurement values and the patient identification information is generated and transmitted to the central data storage. The data record can then be transmitted to a planning tool communicating with the central data storage for performing the optometric procedure. | 03-17-2011 |
20110058715 | METHOD FOR THE CREATION OF PANORAMIC IMAGES OF THE EYE FUNDUS - A method for creating or calculating panoramic images of the eye fundus particularly from images of a fundus camera. In the method a pre-positioning process is carried out in which a first variable is determined for geometrically associating the images with each other. An anchor image is determined as a reference for the first variables for the geometric association; areas that are associated with each other are determined in the anchor image and the other images by a block-matching algorithm; transformation parameters for a geometric transformation between the anchor image and the other images are determined from the mutual position of the associated areas; and the other images are transformed onto the anchor image by transformation parameters and are superimposed onto the anchor image and among each other. | 03-10-2011 |
20110040294 | Method and device for the representation of an operation area during laser operations - A method for monitoring the processing of a lens includes recording the lens using a spatial recording system so as to generate image information for the lens; generating an actual three-dimensional image of the lens from the image information on a spatial display unit; and displaying the actual three-dimensional image of the lens together with a predetermined three-dimensional image of at least a portion of an eye on the spatial display unit. | 02-17-2011 |
20110034911 | METHOD FOR GENERATING CONTROL DATA FOR EYE SURGERY, AND EYE-SURGICAL TREATMENT DEVICE AND METHOD - A method for generating control data for an eye-surgical treatment device, which separates tissue layers in the eye cornea by application of a laser device, wherein a contact glass having a contact surface deforms the cornea to conform to the shape of the contact surface during the operation of the laser device. The contact surface is first placed on a cornea apex at a contact surface apex and is then pressed against the same for deforming the cornea. The method includes: generating the control data of the laser device such that the data specifies coordinates of target points located in the cornea for the laser device, and upon generation of the target point coordinates the deformation of the cornea which is present during the operation of the laser device as a result of the contact glass is taken into consideration. The invention provides that the several steps are carried out in consideration of the deformation in order to determine a displacement of a point P in the undeformed cornea caused by the deformation. | 02-10-2011 |
20100331831 | TREATMENT DEVICE FOR OPERATIVELY CORRECTING DEFECTIVE VISION OF AN EYE, METHOD FOR PRODUCING CONTROL DATA THEREFOR AND METHOD FOR OPERATIVELY CORRECTING DEFECTIVE VISION OF AN EYE - A treatment apparatus for operatively correcting myopia or hyperopia in an eye includes a laser device controlled by a control device and that separates the corneal tissue by applying a laser beam. The control device controls the laser device to emit the laser beam into the cornea such that a lenticule-shaped volume is isolated in the cornea. The control device, when controlling the laser device, predefines the lenticule-shaped volume such that the volume has a minimum thickness of between 5 and 50 μm. For myopia correction, the minimum thickness occurs on the edge of the volume, and for hyperopia correction the minimum thickness occurs in the region of the visual axis. | 12-30-2010 |
20100331830 | TREATMENT DEVICE FOR SURGICALLY CORRECTING AMETROPIA OF AN EYE AND METHOD FOR CREATING CONTROL DATA THEREFORE - A treatment device for the surgical correction of hyperopia in the eye comprising a laser device controlled by a control device. The laser device separating corneal tissue by applying laser radiation. The control device controls the laser device for emitting the laser radiation into the cornea such that a lenticule-shaped volume is isolated. Removal thereof effects the desired correction. The control device ( | 12-30-2010 |
20100328607 | OPHTHALMOLOGICAL MEASURING SYSTEM AND METHOD FOR DETERMINING THE BIOMETRIC DATA OF AN EYE - An ophthalmological measuring system for obtaining biometric data of an eye with a view to the pre-operative determination of a replacement lens or supplementary lens or refractive operations. The invention includes a combination of a measuring instrument based on ultrasound, an optical measuring instrument, and an evaluation unit, measuring values of the optical measuring instrument and/or of the measuring instrument based on ultrasound being used by the evaluation unit for determining the biometric data of an eye. Furthermore, keratometric and/or pachymetric measurements can also be carried out. The combination of different measuring systems enables a complete examination or diagnosis of a patient on a measuring table, so that the patient does not need to be moved, or have to come back at a later date for more measurements. | 12-30-2010 |
20100302550 | DEVICE AND METHOD FOR THE OPTICAL MEASUREMENT OF RELATIVE DISTANCES - An optical time domain coherence tomograph including an object beam path, a detection beam path and a detector unit. An interferometer unit, which has a first and a second beam path part having different optical path lengths, splits radiation and feeds it into the two beam path parts and superimposes it again after passage through the beam path parts and thus generates a dual beam, which has components which are axially offset to one another because of the differing optical path lengths of the two beam path parts. A scanning unit has a first adjuster and a second adjuster for adjusting the optical path length of the first and second beam path parts and the first and the second adjustment means adjusting the path length for scanning the object in coordination to one another under control by the control unit. | 12-02-2010 |
20100284021 | SHORT COHERENCE INTERFEROMETER - A short coherence interferometer apparatus for measuring multiple axially spaced regions of a specimen, in particular the eye, which has at least one measuring beam path, through which multiple individual measuring beams are incident on the specimen, and one reference beam path, through which a reference beam runs, with which the individual measuring beams are superimposed and brought into interference. The individual measuring beams are axially offset to one another upon incidence on the specimen by an amount which is adapted to the axial spacing. The interferometer apparatus superimposes each individual measuring beam with the reference beam in an interfering manner and conducts it to a detector associated with the particular individual measuring beam. The individual measuring beams are combined into a mixture in which they have varying phasing in the superposition with the reference beam. | 11-11-2010 |
20100277695 | APPLICATOR FOR AN OPHTHALMOLOGIC TREATMENT DEVICE - An applicator for an ophthalmologic treatment or diagnostic device, wherein a laser beam and an illumination beam are directed at the eye and light reflected from the eye is fed to an examining beam path. A reflective surface is provided for the reflection of the illumination beam and comprises an optical aperture for the laser beam. | 11-04-2010 |
20100274233 | METHOD AND DEVICE FOR PERFORMING ONLINE ABERROMETRY IN REFRACTIVE EYE CORRECTION - A device for correcting visual defects of an eye comprises a coherent light source, a beam modification device for shaping and deflecting a beam of the coherent light source, and a wavefront analyzer device for analyzing a wavefront of an optical path in the eye | 10-28-2010 |
20100274232 | LASER SYSTEM - A laser system for the irradiation of an eye includes a laser configured to emit a laser beam; a focusing device configured to focus the laser beam; and a beam-shaping device configured to generate a predetermined intensity distribution in a cross section of the laser beam such that an intensity minimum of the laser beam is disposed in region of a center of the cross section of the laser beam. | 10-28-2010 |
20100238401 | DEVICE AND METHOD FOR EXAMINING THE EYE FUNDUS, ESPECIALLY THE PHOTORECEPTORS - A device for examining the eye fundus and photoreceptors includes an illumination beam path having optical beam forming and/or guiding components, at least one illumination unit for providing a continuous illumination and a flash illumination, and an observation and imaging beam path having optical beam forming and/or guiding components and a device for varying the magnification, including a beam splitter for splitting the observation and imaging beam path. A rotatable diffraction grating is disposed in a plane in the observation and imaging beam path that is conjugate to the object plane and the movement of the grating is synchronized with the illumination unit that serves as the flash illumination so that an image recording sensor records a rapid sequence of images of the eye fundus at different positions of the grating and said sequence is forwarded to an existing evaluation unit. | 09-23-2010 |
20100228236 | ADAPTER FOR COUPLING A LASER PROCESSING DEVICE TO AN OBJECT - An adapter contact lens to be applied in contact with an anterior corneal surface. The adapter includes a contact glass portion having a corneal contact surface curvature that is flatter than that of the undeformed anterior corneal surface. When the contact glass is applied the cornea deforms assume a deformed state corneal curvature that is parallel to the flatter corneal contact surface curvature. A mount portion circumferentially surrounds the contact glass and defines a suction duct that is structured to secure the adapter to the cornea by negative pressure when it is brought into contact with a surface of the eye surrounding the contact glass portion. The suction duct being partially defined by a peripheral edge of the mount; that extends outwardly away from the mount portion and toward but not intersecting or extending beyond a geometric continuation of the corneal contact surface curvature. | 09-09-2010 |
20100214533 | Spectrometer - A spectrometer is described, especially for an optical coherence tomograph ( | 08-26-2010 |
20100191230 | APPARATUS FOR INDIVIDUAL THERAPY PLANNING AND POSITIONALLY ACCURATE MODIFICATION OF AN OPTICAL ELEMENT - A navigation apparatus for optically analyzing an inner structure of an optical element and processing that element comprises a detection device and a processing device. The detection device has an aperture smaller than 0.25 and the processing device is disposed relative to the analyzed inner structure of the optical element. An apparatus for planning therapy for a human eye comprises a dynamic wavefront measurement device for acquiring wavefront data, a diagnostic device for determining geometric parameters of the optical apparatus of the eye, a controller for consistent superposition of the wavefront and geometric data, and an additional controller for planning the most efficient therapeutic laser cutting paths. | 07-29-2010 |
20100145319 | COAGULATION SYSTEM - A coagulation system for the coagulation of organic tissue includes a laser configured to emit a working beam; an interrupter configured to at least partially interrupt the working beam; a controller configured to activate the interrupter; and a detector configured to detect a signal corresponding to a degree of coagulation or alteration of the tissue and to transmit a detection of the signal to the controller, the detector including a dimension meter. | 06-10-2010 |
20100137849 | MULTIPLE-SPOT LASER REFRACTIVE OPHTHALMIC SURGERY - An apparatus for material processing by laser radiation, including a laser source which emits a processing beam, and a beam path for focusing and scanning, the beam path focusing the processing beam into a processing volume and shifting the position of the focus therein. A beam splitting device generates several foci in the processing volume and the beam splitting device splits the processing beam up into a primary beam and at least one secondary beam and leaves the cross section of the beam in a pupil plane of the beam path unchanged during said division and introduces an angle of separation between the primary and secondary beams, so that these beams expand in the beam path in directions which differ by the angle of separation. | 06-03-2010 |
20100134763 | METHOD FOR DETERMINING THE POWER OF AN INTRAOCULAR LENS - For the pre-operative calculation of the power of an intraocular lens, three input parameters are needed: the axial length of the eye (AL), the refractive power of the cornea, and the distance between the front of the cornea and the back focal plane of the intraocular lens, the so-called effective lens position (ELP). The invention shows a novel approach to the determination of the ELP. | 06-03-2010 |
20100114076 | METHOD OF PERFORMING REFRACTIVE LASER EYE SURGERY CENTERED ALONG THE VISUAL AXIS OF A HUMAN EYE - A method of performing refractive laser eye surgery on a human eye is provided wherein the ablation pattern is centered along the visual axis, rather than along the line of sight. First, a wavefront, either ocular, corneal or a combination thereof, is generated by a wavefront sensor centered along the line of sight. This measured wavefront is centered on and encompasses a patient's pupil. Then, an analysis pupil is determined which encompasses the measured pupil. The analysis pupil is centered along the visual axis at the point of intersection with the cornea. Consequently, the measured wavefront is reconstructed over the analysis pupil only using data taken over the area covered by the measured pupil. This reconstruction is done through a least squares fit of a series of slopes from the measured wavefront and/or through the transformation of aberration coefficients. Finally, an ablation pattern, or a lenticule generation pattern, to be performed by a refractive laser centered on the corneal intersect of the visual axis is produced in accordance with the reconstructed wavefront. | 05-06-2010 |
20100087802 | CORNEA TRANSPLANTATION - A planning device generating control data for a treatment apparatus for cornea transplantation using a laser device to separate a corneal volume by at least one cut surface in the cornea and to separate a transplant, from a surrounding transplantation material by at least one cut surface wherein the planning device includes an interface supplying measurement data relating to parameters of the cornea. A computer defines a corneal cut surface which confines the corneal volume to be removed, and determines a transplant cut surface by using the transplantation material data and depending on the defined corneal cut surface. The transplant cut surface confines the transplant, and the computer generates one control data for each cut surface to control the laser, wherein the respective cut surfaces can be produced by the laser to isolate the corneal volume and the transplant and to make them removable. | 04-08-2010 |
20100066823 | METHOD AND DEVICE FOR PRODUCING AN IMAGE OF A THIN LAYER OF AN OBJECT - A method for producing an image of a layer of an object by a wide field optical element on a resolving detector. The object is illuminated in a focused manner on at least one object plane having at least two binary illuminating patterns. The corresponding images are detected. Light and/or the dark areas of the illuminating patterns completely cover the object when the illuminating pattern is superimposed. A layer image determined from the detected images, includes a partial segment that respectively reproduces a partial area of the object that is arranged inside the light area of one of the used illuminating patterns. Edges are arranged at a distance from the edges of the light area about at least one predefined minimum distance. | 03-18-2010 |
20100053554 | OPHTHALMOLOGICAL EXAMINATION DEVICE - The invention relates to an opthalmological measuring instrument, e.g. for determining the corneal curvature, anterior chamber depth, axial length, or the like, comprising measuring systems for determining said variables. The measuring systems are connected to an evaluation unit which verifies whether quality parameters regarding the measurements are satisfied and generates a corresponding signal that indicates to the user that a proper measurement can be taken. | 03-04-2010 |
20100049174 | APPARATUS FOR GENERATING A CORRECTING CUT SURFACE IN THE CORNEA OF AN EYE SO AS TO CORRECT AMETROPIA AS WELL AS A CONTACT ELEMENT FOR SUCH APPARATUS - An apparatus for generating a correcting cut surface in the cornea of including a laser unit, which can focus and move pulsed laser radiation; a first contact element; and a control unit, controlling the laser unit which has a standard setting which, when a standard curvature is imposed upon corneal surface by the first contact element, would lead to a standard cut surface. The standard cut surface has a known curvature with respect to a reference surface. The curvature, with respect to the reference surface of the correcting cut surface to be generated deviates from the known curvature of the standard cut surface. The apparatus includes a second contact element adapted to generate the correcting cut surface, which cornea imposes an actual curvature deviating from the standard curvature, thus generating a cut surface using the standard setting results in the correcting cut surface to be generated. | 02-25-2010 |
20100030332 | ACCOMMODATIVE LENS IMPLANT, CONTROLLED BY THE CILIARY MUSCLE - The invention relates to an accommodative lens implant controlled by the ciliary muscle, consisting of at least one or more lenses made of preferably biocompatible material and disposed on a common optical axis, the at least one lens being a component of a flexible, closed implant body that is transparent in the region of the actual lens, is engaged at its outer periphery with the ciliary muscle, and has a main axis that coincides with the visual axis, and in addition at least part of the implant body with the lens or lenses comprises a fluid filling, such that the axial position of the lens or the lens system can be altered by activation of the ciliary muscle, the implant body being inserted in the sulcus of the posterior chamber of the eye or attached to the ciliary muscle. | 02-04-2010 |
20100026956 | OPHTHALMIC APPARATUS AND OPHTHALMIC METHOD FOR POSITIONING AN EYE OF A PATIENT IN A PREDETERMINED NOMINAL POSITION - An ophthalmic apparatus including a supporting device for a patient and an eye treatment device. The apparatus includes a contact element for spatially fixing an eye of the patient with respect to the treatment device, and a positioning device for shifting the supporting device and a contact element relative to each other in order to position the eye, before it is fixed using the contact element, at a predetermined nominal position relative to the contact elements. The ophthalmic apparatus includes a detection device, which records an image of the eye of the patient present on the supporting device and, on the basis of said recorded image, determines an indication concerning a relative shift of the supporting device with respect to the contact element, which shift is required to move the eye to the nominal position by means of the positioning device. | 02-04-2010 |
20100023772 | METHOD FOR GENERATING A ONE-TIME ACCESS CODE - A method for generating an access code for a device or system. The one-time access code generated by the method for the device or system is valid only once. The method can be used for supplying goods or services by means of automatic or semiautomatic access control devices or systems, for example. | 01-28-2010 |
20090326522 | OBJECT FIGURING DEVICE - A device for shaping objects by removal of material from the surface thereof with a pulsed laser beam and a deflecting device through which the laser bean is guided over the surface of the object. An optical device is provided for changing the distribution of the radiation intensity inside the laser beam cross section. After the passage of the laser beam through this optical device, the radiation intensity has a bell-shaped or Gaussian distribution, or a distribution similar to a bell-shaped or Gaussian distribution, in at least one cross-sectional direction through the laser beam. | 12-31-2009 |
20090257024 | OPHTHALMOLOGICAL INSTRUMENT - A homogeneously illuminating ophthalmic instrument includes an illumination device having a source of illumination, a homogenizing unit and a projection device, at least one organic or inorganic source of radiation with spectrally selective emission being used as a source of illumination. The illumination generated in this way enables correspondingly adapted visual and/or digital observation, recording or display of the examined regions of the eye by a visualizing unit. | 10-15-2009 |
20090241184 | METHOD FOR GENERATING ACCESS DATA FOR A MEDICAL DEVICE - A method for generating an access code to a medical device including a memory for patient data, the access code being valid only once. According to the method, a query key is generated from a device-internal identification and is transmitted to an authorization entity. The authorization entity generates an associated release key from the query key. The release key grants access and modifies the internal identification when the release key is entered into the device such that the access code cannot be used a second time. | 09-24-2009 |
20090207874 | MULTIWAVELENGTH LASER SYSTEM AND METHOD FOR OPHTALMOLOGICAL APPLICATIONS - A multiwavelength laser system for opthalmological applications. The system including a first semiconductor diode laser including a first working beam of a first wavelength; and at least one second semiconductor diode laser having a second working beam of a second wavelength. The second wavelength being different from the first wavelength. | 08-20-2009 |
20090115967 | Optical Scanning System - The present application is directed to an optical scanning system for medical applications, preferably in ophthalmology, which can be used for a large range of diagnostic and therapeutic applications. The optical scanning system comprises at least one controllable reflector which has an actuator and which is arranged in a first imaging beam path for deflecting at least one therapy beam and/or diagnosis beam over a work field in a scanning manner, a second imaging beam path for a fixation beam which is imaged on the work field in a spatially fixed manner with respect to the optical axis of the system, and a central control unit. The moving reflector is used to unify the two imaging beam paths and has dichroic characteristics so that it is transmissive for the fixation beam and reflective for the therapy beam and/or diagnosis beam(s). The second radiation source which serves to generate the fixation beam is controlled so as to be synchronized to the position of the moving reflector. | 05-07-2009 |
20090096986 | Unit and Method for Internally Guiding Vision in Fundus Cameras - The present invention is directed to an optoelectronic unit for directing the eye gaze of the patient during examination or documentation of the fundus of the eye. The solution according to the invention for internal eye gaze guidance in fundus cameras provides a spatial light modulator for generating the fixation mark comprising imaging optics by which the displayed fixation mark is imaged on the eye fundus by a semitransparent mirror arranged in an observation beam path and via a swivel mirror arranged in a documentation beam path. The spatial light modulator is connected by a control unit to an actuating element for positioning the fixation mark. The device, which is preferably provided for fundus cameras, can facilitate the diagnosis of diseases of the eye fundus in that the documented recordings can be exactly reproduced and therefore exactly compared. In particular, the tracking and presentation of the course of diseases can be improved in this way. | 04-16-2009 |
20080319464 | RE-TREATMENT FOR OPHTHALMIC CORRECTION OF REFRACTION - A planning device generating control data for a treatment apparatus for refraction-correcting ophthalmic surgery is provided, said apparatus using a laser device to separate a corneal volume, which is to be removed for correction, from the surrounding cornea by at least one cut surface in the cornea of an eye, said planning device comprising an interface for receiving corneal data including information on pre-operative cuts which were generated in a previous ophthalmic operation, and computing means for defining a corneal cut surface which confines the corneal volume to be removed, said computing means defining the corneal cut surface on the basis of the corneal data and generating a control dataset for the corneal cut surface for control of the laser device. | 12-25-2008 |
20080319428 | TREATMENT APPARATUS FOR SURGICAL CORRECTION OF DEFECTIVE EYESIGHT, METHOD OF GENERATING CONTROL DATA THEREFORE, AND METHOD FOR SURGICAL CORRECTION OF DEFECTIVE EYESIGHT - A treatment method and apparatus for surgical correction of defective-eyesight in an eye of a patient, wherein a laser device is controlled by a control device, said laser device separating corneal tissue by irradiation of laser radiation to isolate a volume located within a cornea, wherein the control device controls the laser device to focus the laser radiation, by providing target points located within the cornea, into the cornea, wherein the control device, when providing the target points, allows for focus position errors which lead to a deviation between the predetermined position and the actual position of the target points when focusing the laser radiation, by pre-offsets depending on the positions of the respective target points to compensate for said focus position errors. | 12-25-2008 |
20080310031 | Variable Lens - The invention relates to a variable lens for controlling electromagnetic radiation that interacts with said lens in a controlled manner. The lens includes a container; a first dielectric fluid that is held in the container; a second dielectric fluid that is held in the container, a phase boundary layer between the first and the second fluid. The relative dielectric constant of the first fluid is different from a relative dielectric constant of the second fluids. At least one first electrode; and at least one second electrode is positioned in relation to the first electrode in such a way that an electric current that is applied between the first and the second electrode generates an electric field, which infiltrates the phase boundary layer. | 12-18-2008 |
20080300581 | Device and Method for Photocoagulation of the Retina - A device for photocoagulation of a retina includes a radiation source and an optical application system including a representation device configured to depict regions of the retina with sub-threshold coagulation. In addition a method for photocoagulation of the retina is provided. | 12-04-2008 |
20080285043 | Interferometric Sample Measurement - A device for the interferometric measurement of a sample, in particular the eye, including an interferometer arrangement with a first measurement beam path, through which a measurement beam falls onto the sample, and a first reference beam path, through which a reference beam runs, which is applied to the measuring beam for interference. The interferometer arrangement includes a second measuring beam path and/or second reference beam path. The optical path lengths of the second measuring beam path and/or second reference beam path are different from one of the first beam paths. The wave length difference is selected according to a distance of two measuring areas which are arranged at a distance in the depth direction of the sample. | 11-20-2008 |
20080278684 | Ophthalmological Measuring System and Method for Determining the Biometric Data of an Eye - An opthalmological measuring system for obtaining biometric data of an eye. with a view to the pre-operative determination of a replacement lens or supplementary lens or refractive operations. The invention includes a combination of a measuring instrument based on ultrasound, an optical measuring instrument, and an evaluation unit, measuring values of the optical measuring instrument and/or of the measuring instrument based on ultrasound being used by the evaluation unit for determining the biometric data of an eye. Furthermore, keratometric and/or pachymetric measurements can also be carried out. The combination of different measuring systems enables a complete examination or diagnosis of a patient on a measuring table, so that the patient does not need to be moved, or have to come back at a later date for more measurements. | 11-13-2008 |
20080275433 | APPARATUS AND METHOD FOR GENERATING CUT SURFACES IN THE CORNEA OF AN EYE FOR CORRECTION OF AMETROPIA - An apparatus for generating cut surfaces in the cornea of an eye in order to correct ametropia is provided, said apparatus comprising a laser unit, which can focus pulsed laser radiation into the cornea and move it therein in order to generate cut surfaces, and a control unit, which controls the laser unit for generating cut surfaces such that a predetermined lenticle to be removed is separated from the surrounding corneal material in the cornea by at least one cut surface, and that at least two mutually spaced apart cut surfaces are formed as opening cuts, each extending from the lenticle to the anterior corneal surface, the position and shape of the opening cuts being selected such that the opening cuts contribute to the correction of the ametropia of the eye or do not counteract the correction of the ametropia of the eye. | 11-06-2008 |
20080269729 | UNINTERRUPTED POWER SUPPLY, ESPECIALLY FOR A REFRACTIVE LASER - The invention concerns an uninterruptible power supply that is used in particular with a refractive laser. A rechargeable battery is provided, whereby prior to beginning the treatment the capacity of the battery is tested to assure that it is sufficient to safely complete the treatment in the event the voltage supply is interrupted. | 10-30-2008 |
20080234707 | Contact Glass for Ophthalmic Surgery - In a contact glass for ophthalmic surgery, which comprises a lens body ( | 09-25-2008 |