Entries |
Document | Title | Date |
20080198328 | System and method self enabling customers to obtain refraction specifications for, and purchase of, previous or new fitted eyeglasses - A system and method for obtaining a sight screening as well as previous and current optical prescriptions (specifications) for virtual try-on and purchase of glasses and contact lenses operated by one's self, through a voice-activated response self-refraction, or a technician/optician assisted refraction, at a convenient location or possibly several different customer diagnostic, electronic store locations where digital instruments interface and may transfer either directly back to the customer, or to a remote, interactive audio-video diagnosing and assisting, consulting eye doctor (ophthalmologist or optometrist) who interprets the digital data, diagnoses, consults, delivers health care, and authorizes the specifications, whereby the store technician/optician gathers data for purchase and electronically sends the data to a lens lab for fabrication and delivery of glasses or contact lenses to the store or directly to the customer; and, the customer can purchase selected glasses or contact lenses from any internet PC address, whereby the technician provides the customer with a CD containing customer data and digital imaging for reorders either through a PC or a selected retail location. | 08-21-2008 |
20080198329 | Ophtalmologic surgical microscope having a measuring unit - A surgical microscope ( | 08-21-2008 |
20080212024 | CUSTOMIZED CONTACT LENSES FOR REDUCING ABERRATIONS OF THE EYE - Higher order aberrations of an eye are reduced. Wavefront aberrations of the eye are measured, providing wavefront information and/or a wavefront map. A mask is derived from the wavefront information and/or wavefront map based on the measured wavefront aberrations. A customized contact lens is formed including the mask. The deriving of the mask includes optimizing a figure of merit using a PSF, a MTF, and/or another image quantifier. | 09-04-2008 |
20080212025 | OPTICAL OBSERVATION INSTRUMENT AND A METHOD OF CONTROLLABLY ADJUSTING A REFRACTIVE POWER IN SUCH INSTRUMENT - An optical observation instrument, in particular a spectacle, a reading aid or a telescope, comprises an optical element, in particular a spectacle lens, adapted to be controllably adjustable in its refractive power, a sensor, and a control unit for adjusting the refractive power as a function of signals from the sensor. The sensor is a brightness sensor. In a method of controllably adjusting a refractive power of an optical element in an optical observation instrument an optical parameter is captured by means of a sensor and the refractive power is adjusted as a function of a signal from the sensor. By means of the sensor the brightness of the light impinging on the optical instrument is captured. | 09-04-2008 |
20080218691 | Short-Coherence Interferometeric Measurement of Length on the Eye - Two problems arise when measuring length at the eye by short-coherence interferometry. First, the measurement focus and coherence window usually do not coincide. Second, the scanning process along the eye axis is time-consuming. Both result in poor signal quality and inaccurate measurements. The present application is directed to a short-coherence interferometer in which a right-angle mirror and focusing optics jointly carry out a periodic back-and-forth movement in such a way that the measurement beam focus which is generated by the focusing optics and imaged on the eye by relay optics is moved synchronously with the coherence window from the cornea along the optic axis of the eye to the fovea centralis. Further, different path lengths are generated in the measurement beam path and reference beam path by means of a plurality of reflectors, so that the scanning process is limited to distances which are smaller than the optical length of the eye. The present invention is advantageously implemented using on a fiber-optic interferometer. According to the invention, the reference interferometer arm and measurement interferometer arm are combined with the arms of a fiber-optic interferometer. | 09-11-2008 |
20080218692 | Reflectometry/Interferometry System and Method for Corneal Plane Positioning - A system for positioning an eye of a patient, for example, for laser ophthalmic surgery includes a reflectometer adapted to receive as input a reflected beam from an anterior surface of a cornea of an eye of a patient. The interferometer is calibratable to a desired position of the corneal anterior surface. A comparator is in signal communication with the interferometer and is adapted to calculate from the input a difference between an actual position and the desired position of the corneal anterior surface. A device is in signal communication with the comparator for moving the patient a distance in a direction for matching the actual position to the desired position of the corneal anterior surface. | 09-11-2008 |
20080218693 | CORRECTION OF PRESBYOPIA USING ADAPTIVE OPTICS AND ASSOCIATED METHODS - Devices, systems, and methods measure, diagnose, and/or treat one or both eyes of a patient. Adaptive optics systems (such as those having a deformable mirror) may be configured to an aspherical or multi-spherical presbyopia-mitigating prescriptive shape to allow objective and/or subjective measurements of a candidate prescription. A plurality of viewing distances allow subjective and/or objective evaluations of performance using a light spot or a test viewing image. Measurements of aberrations at selected viewing conditions (including distances and/or brightness) with correlating pupil sizes may also be provided. | 09-11-2008 |
20080225226 | Scanning laser ophthalmoscope - A scanning laser ophthalmoscope comprises: a laser source that emits a laser beam; an irradiation optical system that scans the laser beam over a fundus two-dimensionally; a photoreceptor optical system that receives reflection from the fundus by using a photoreceptor element; an image processor that obtains an image of the fundus based on an output signal from the photoreceptor element; a monitor; and a controller that causes the monitor to display the obtained fundus image, wherein the image processor comprises a subtractive processing circuit that performs time-subtractive processing on the output signal from the photoreceptor element in a state where the output signal is input as an analog signal, and forms the fundus image based on the signal subjected to the subtractive processing. | 09-18-2008 |
20080246916 | Method and Apparatus for Determining the Visual Acuity of an Eye - The invention relates to a method for determining the visual acuity of an eye and a respective apparatus. The method comprises the steps of: providing the wavefront information of the eye, generating a point spread function based on the wavefront information of the eye, said point spread function representing a specific intensity distribution for a corresponding pupil size. After comparing the intensities of the point spread function with a selectable intensity level of intensity, those parts of the point spread function having an intensity being larger than the selectable intensity level are determined as a relevant part of the point spread function. | 10-09-2008 |
20080252848 | TRANSFORMATION METHODS OF WAVEFRONT MAPS FROM ONE VERTEX DISTANCE TO ANOTHER - The present invention provides methods, systems and software for scaling optical aberration measurements of optical systems. In one embodiment, the present invention provides a method of reconstructing optical tissues of an eye. The method comprises transmitting an image through the optical tissues of the eye. Aberration data from the transmitted image is measured across the optical tissues of the eye at a first plane. A conversion algorithm is applied to the data, converting it to corrective optical power data that can be used as a basis for constructing a treatment for the eye at a second plane. | 10-16-2008 |
20080273171 | METHODS AND DEVICES FOR MEASURING TEAR FILM AND DIAGNOSING TEAR DISORDERS - Methods and devices measure eye blinks and tear film lipid and aqueous layer thickness before and following ophthalmic formula application onto the ocular surface, especially wherein the ophthalmic formula is an artificial tear. The methods and devices are suitable for dry eye diagnosis. The methods and devices are suitable for use to evaluate ophthalmic formula effects on the tear film and to use such information to diagnose ophthalmic formula treatment of ocular disease conditions such as dry eye in the absence of contact lens wear or post-surgical eye drop treatment and diagnosis. The methods and devices are also suitable for use in the optimization of ophthalmic drug dosage forms and sustained drug release. | 11-06-2008 |
20080278683 | ADAPTIVE SEQUENTIAL WAVEFRONT SENSOR AND ITS APPLICATIONS - An adaptive sequential wavefront sensor comprises a sub-wavefront focusing lens, a sequential wavefront scanning device, a variable aperture, a position sensing device, and means for coordinating the operation of the wavefront scanning device, the variable aperture and the position sensing device. An adaptive sequential wavefront sensing method comprises the steps of sequentially projecting portions of a wavefront as image spots on a position sensing device, determining the deflection of each received image spot from a reference point on the position sensitive device, and coordinating the operation of a variable aperture with the operation the sequential projection and image position sensing. The adaptive sequential wavefront sensor has high speed, large dynamic range and variable spatial resolution, and hence can be used for real time measurement of the dynamics of eye accommodation. In addition, other functions or measurements can be combined with the adaptive sequential wavefront sensor to provide additional advantages. These additional function or measurement modules include a micro display based internal fixation and visual acuity projection module, a corneal topography module, and an optical coherence tomography module. When one or more of these modules is (are) combined with the adaptive sequential wavefront sensor, the combination system or apparatus can provide more accurate objective and subjective auto-refraction prescription, LASIK corneal ablation prescription, and contact lens or intra ocular lens prescriptions. | 11-13-2008 |
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 |
20080291395 | ACCOMMODATION COMPENSATION SYSTEMS AND METHODS - Methods and systems for obtaining an ocular aberration measurement of an eye of a patient are provided. Exemplary techniques involve obtaining a first induced metric for the eye that corresponds to a first accommodation state of the eye, obtaining a second induced metric for the eye that corresponds to a second accommodation state of the eye, and determining a natural metric of the eye based on the first and second induced metrics. An induced metric may include a pupil size or a spherical aberration. Techniques can also include determining a target metric for the eye base on the natural metric, determining whether an actual metric of the eye meets the target metric, obtaining an ocular aberration measurement of the eye if the actual metric meets the target metric, and determining a treatment for the eye based on the ocular aberration measurement. | 11-27-2008 |
20080309871 | RESIDUAL ACCOMMODATION THRESHOLD FOR CORRECTION OF PRESBYOPIA AND OTHER PRESBYOPIA CORRECTION USING PATIENT DATA - Methods, devices, and systems establish an optical surface shape that mitigates or treats presbyopia in a particular patient. The combination of distance vision and near vision in a patient can be improved, often based on input patient parameters such as pupil size, residual accommodation, and power need. Iterative optimization may generate a customized corrective optical shape for the patient. Threshold residual accommodation is established for presbyopia treatment. | 12-18-2008 |
20090015787 | APPARATUS AND METHOD FOR DETERMINING AN EYEGLASS PRESCRIPTION FOR A VISION DEFECT OF AN EYE - The disclosure relates to a method for determining an eyeglass prescription for a vision defect of an eye. In certain embodiments, the method includes optimizing a caustic in the area of the retina of the eye for a light ray passing through the eyeglass prescription and the eye. The disclosure further relates to an apparatus that is suitable for carrying out the method. | 01-15-2009 |
20090021694 | Systems and Methods for Prediction of Objective Visual Acuity Based on Wavefront Measurements - Methods, devices, and systems for predicting an optical acuity measure of an optical system of an eye. An optical acuity measure can be predicted by determining a point spread function based on a wavefront measurement of an eye, convolving a resolution target with the point spread function to produce an image, and predicting the optical acuity measure of the optical system of the eye based on the image. | 01-22-2009 |
20090033867 | WAVEFRONT REFRACTIONS AND HIGH ORDER ABERRATION CORRECTION WHEN WAVEFRONT MAPS INVOLVE GEOMETRICAL TRANSFORMATIONS - Wavefront measurements of eyes are typically taken when the pupil is in a first configuration in an evaluation context. The results can be represented by a set of basis function coefficients. Prescriptive treatments are often applied in a treatment context, which is different from the evaluation context. Hence, the patient pupil can be in a different, second configuration, during treatment. Systems and methods are provided for determining a transformed set of basis function coefficients, based on a difference between the first and second configurations, which can be used to establish the vision treatment. | 02-05-2009 |
20090033868 | Characterization of the Retinal Nerve Fiber Layer - Disclosed are method and apparatus for characterizing the retinal nerve fiber layer (RNFL). An advantageous diagnostic parameter for characterizing the RNFL is a function of the product of the local RNFL thickness at a measurement locus×the distance of the measurement locus from a base point. The value of the diagnostic parameter in a patient's retina is compared to a corresponding reference range acquired from a population of healthy retinas. | 02-05-2009 |
20090033869 | Ophthalmic ultrasonic measurement apparatus, and an ophthalmic measurement method - An ophthalmic ultrasonic measurement apparatus capable of narrowing differences in measurement results obtained by the apparatus which are made because of differences among examiners who operate the apparatus comprises an ultrasonic probe arranged to be brought into contact with a cornea of an examinee's eye, a calculation unit arranged to obtain a measured value of a length from the cornea to a given section inside the eye based on an echo from the eye by an ultrasonic wave which is emitted from the probe, and a memory arranged to store information on examiners and adjustment information for narrowing differences in measured values of the length which are made because of differences among the examiners while the adjustment information is associated with the examiners' information, wherein the calculation unit corrects the obtained measured value using the stored adjustment information. | 02-05-2009 |
20090073380 | ACCOMMODATION COMPENSATION SYSTEMS AND METHODS - Methods and systems for obtaining an ocular aberration measurement of an eye of a patient are provided. Exemplary techniques involve obtaining a first induced metric for the eye that corresponds to a first accommodation state of the eye, obtaining a second induced metric for the eye that corresponds to a second accommodation state of the eye, and determining a natural metric of the eye based on the first and second induced metrics. An induced metric may include a pupil size or a spherical aberration. Techniques can also include determining a target metric for the eye base on the natural metric, determining whether an actual metric of the eye meets the target metric, obtaining an ocular aberration measurement of the eye if the actual metric meets the target metric, and determining a treatment for the eye based on the ocular aberration measurement. | 03-19-2009 |
20090086163 | COMPOUND MODULATION TRANSFER FUNCTION FOR LASER SURGERY AND OTHER OPTICAL APPLICATIONS - Methods, devices, and systems establish an optical surface shape that mitigates or treats a vision condition in a patient. An optical surface shape for a particular patient can be determined using a set of patient parameters for the specific patient by using a compound modulation transfer function (CMTF). The compound modulation transfer function can include a combination of modulation transfer functions (MTF's) at a plurality of distinct frequencies. | 04-02-2009 |
20090091706 | Simultaneously multi-temporal visual test and method and apparatus therefor - A method for determining a likelihood of a visual deficit in a subject uses a simultaneously multi-temporal visual test. At least two visual patterns are simultaneously displayed to the subject. Each pattern reverses in contrast or color at a different display frequency, and each pattern is displayed to a different region of the subject's visual field. Electrical activity of the brain of the subject is captured and sampled, and one or more frequency components are resolved from the resulting signal, where each frequency component corresponds to a different display frequency. The method then involves determining from the frequency components, optionally by comparison between the eyes, a measurement of a likelihood that a visual deficit exists in a particular area. | 04-09-2009 |
20090103047 | Tonometer Using Camera and Ambient Light - A tonometer uses ambient light available in an eye examining room, rather than a dedicated source of light, to examine a characteristic of an eye. A digital camera in the tonometer views an image of the eye as it is engaged by a contactor that applanates or indents the cornea. An electromagnetic mount for the contactor can supply a force pressing the contactor against the eye. While the examiner observes the resulting image a strain gauge can also measure the deformation pressure applied to the eye by the contactor. A microprocessor can then determine a characteristic of the eye from signals supplied by the camera and the strain gauge or the electromagnet force applier. | 04-23-2009 |
20090161067 | Ophthalmic Instrument Alignment Apparatus and Method of Using Same - An ophthalmic instrument for use with a subject's eye, comprising an interferometer having a test arm in which the subject's eye is to be positioned and a reference arm, the reference arm including a mirror adapted to be positioned such that the reference arm has a predetermined length, and an ophthalmic apparatus coupled to the interferometer such that, by altering a test arm length, a length between the ophthalmic apparatus and the eye is also altered. The mirror is positioned to achieve the predetermined length and a length of the test arm is adjusted such that interference between the light reflected from the eye and the light reflected from the mirror is achieved, the ophthalmic apparatus is optically aligned with the eye. | 06-25-2009 |
20090168017 | REFRACTIVE PRESCRIPTION USING OPTICAL COHERENCE TOMOGRAPHY - An optical coherence tomography apparatus and method for measuring refractive power of the human cornea is disclosed. The apparatus collects both the specularly reflected light from the anterior surface of the cornea and diffusely reflected light from the interior of the cornea. The combined refractive power of both surfaces of the cornea is determined. | 07-02-2009 |
20090185132 | SYSTEMS AND METHODS OF PHASE DIVERSITY WAVEFRONT SENSING - A phase diversity wavefront sensor includes an optical system including at least one optical element for receiving a light beam; a diffractive optical element having a diffractive pattern defining a filter function, the diffractive optical element being arranged to produce, in conjunction with the optical system, images from the light beam associated with at least two diffraction orders; and a detector for detecting the images and outputting image data corresponding to the detected images. In one embodiment, the optical system, diffractive optical element, and detector are arranged to provide telecentric, pupil plane images of the light beam. A processor receives the image data from the detector, and executes a Gerchberg-Saxton phase retrieval algorithm to measure the wavefront of the light beam. | 07-23-2009 |
20090201465 | METHODS AND DEVICES FOR MEASURING TEAR FILM AND DIAGNOSING TEAR DISORDERS - Methods and devices measure eye blinks and tear film lipid and aqueous layer thickness before and following ophthalmic formula application onto the ocular surface, especially wherein the ophthalmic formula is an artificial tear. The methods and devices are suitable for dry eye diagnosis. The methods and devices are suitable for use to evaluate ophthalmic formula effects on the tear film and to use such information to diagnose ophthalmic formula treatment of ocular disease conditions such as dry eye in the absence of contact lens wear or post-surgical eye drop treatment and diagnosis. The methods and devices are also suitable for use in the optimization of ophthalmic drug dosage forms and sustained drug release. | 08-13-2009 |
20090219483 | Front-lens attachment for an optical observation device - The present invention, among other things, relates to a front-lens attachment ( | 09-03-2009 |
20090237614 | APPARATUS AND METHOD FOR ASSESSING RETINAL DAMAGE - The invention administers an objective clinical test to an eye that measures the visual sensitivity of the superior retina and the inferior retina, by alternately presenting a stimulus pair comprising a shaped superior light stimulus and a shaped inferior light stimulus that are horizontal mirror images of one another and have shapes encompassing visual field defects. The shaped superior and inferior light stimuli stimulate pupillary responses whose amplitudes are measured. A cycle-averaged pupillary response balance and a luminance ratio are computed for each presentation of a stimulus pair. A stimulus pair response curve is computed by fitting cycle-averaged pupillary response balances to a sigmoid function of the luminance ratios. A balanced luminance ratio at which the cycle-averaged pupillary response balance is equal to about zero is computed from the sigmoid function. The balanced luminance ratio is indicative of the presence and location of retinal nerve damage. | 09-24-2009 |
20090251664 | SYSTEMS AND METHODS FOR DETERMINING INTRAOCULAR LENS POWER - A system for providing an intraocular lens includes a processor and a computer readable memory. The computer readable memory is configured to communicate with the processor, the memory having stored therein at least one of: one or more ocular dimensions, and at least one predetermined refractive outcome. The memory further includes a sequence of instructions which, when executed by the processor, cause the processor to select an intraocular lens, select a power of an intraocular lens, or provide an intraocular lens. The sequence of instructions includes determining one or more dimensions of an eye. The instructions also include calculating, based on a mathematical relationship, a distance from an apex of a cornea of the eye to an apex or plane of the intraocular lens after insertion into the eye. The instructions further calculating an optical power of the intraocular lens suitable for providing a predetermined refractive outcome. The mathematical relationship includes an axial length of the eye, an anterior chamber depth of the natural crystalline lens, and a corneal radius of the eye, but is independent of a thickness of the natural crystalline lens. | 10-08-2009 |
20090257023 | Method to Detect Transmissible Spongiform Encephalopathies Via Electroretinogram - Disclosed is a method for identifying transmissible spongiform encephalopathy in livestock via an electroretinogram, the method comprises producing a biphasic electroretinogram waveform having an a-wave and b-wave from livestock retina in response to photic stimulus, measuring the amplitude of the b-wave, wherein the amplitude is measured from the trough of the a-wave to the peak of the b-wave, measuring the implicit time of the b-wave, wherein the implicit time is measured from onset of photic stimulus to b-wave peak; and comparing said produced waveform to a comparative waveform of livestock known not to have transmissible spongiform encephalopathy, wherein the produced waveform having a decrease b-wave amplitude and increased b-wave implicit time being indicative of livestock having transmissible spongiform encephalopathy. | 10-15-2009 |
20100014050 | APPARATUS AND METHOD OF DIAGNOSIS OF OPTICALLY IDENTIFIABLE OPHTHALMIC CONDITIONS - An apparatus that can measure images of at least a portion of an eye and record data sets indicative of a neurological condition. A method interrelates an image and a data set to provide an interpretive result. The apparatus and method thereby provide guidance as to the presence of a medical condition in a patient. The apparatus and method can be used in an iterative measurement process, in which the apparatus attempts to discern normal health from a state of health that is not normal health. If the interpretive result is consistent with normal health, the process terminates, information is recorded, and an optional report is given. If the interpretive result is not consistent with normal health, the apparatus and method attempts to distinguish which condition is consistent with the data and images used, and can iterate with additional measurements and information to attempt to provide a useful interpretive result. | 01-21-2010 |
20100026955 | OPHTHALMIC LENS DISPENSING METHOD AND SYSTEM | 02-04-2010 |
20100039614 | SYSTEM AND METHOD FOR PRESCRIPTION OF VISUAL AIDS - In one aspect, the invention features a method for determining an eyeglass prescription for an eye. The method includes obtaining a measurement of a wavefront indicative of the refractive properties of the eye, establishing an optimization space corresponding to a plurality of possible prescriptions for the eye, determining a value for a merit function for each of the possible prescriptions in the optimization space, where the merit function value corresponds to a visual function of the eye when corrected using the corresponding possible prescription, generating a representation of the merit function values, and outputting the representation to an eye care professional. | 02-18-2010 |
20100053552 | CUSTOM PHASE PLATE - A custom phase plate for a light beam of wavelength “λ” includes a sheet of plastic material having a base refractive index “n | 03-04-2010 |
20100079725 | Lens Design Simplification Process - A method for producing lenses with at least one simple surface that is optically equivalent to a lens having two complex surfaces. | 04-01-2010 |
20100085537 | LENSLET ARRAY FOR RETINAL OXIMETRY - The multi-aperture system of the present invention provides a retinal oximetry apparatus for determining the level of oxygen saturation in retinal vessels using a lenslet array comprising at least seven lenses for the simultaneous measurement of reflected light with at least three wavelengths and at least four polarization states. The multi-aperture system of the present invention further provides an apparatus for determining the level of oxygen saturation in retinal vessels using a lenslet array comprising at least ten lenses for the simultaneous measurement of reflected light with at least three wavelengths for oxygen measurement, at least three wavelengths for melanin content, and at least four polarization states. Methods of operating the same are also provided. | 04-08-2010 |
20100091241 | METHOD AND SYSTEM TO ASSESS OBJECTIVELY VISUAL CHARACTERISTICS - A method to assess objectively visual characteristics of one eye ( | 04-15-2010 |
20100091242 | System and process for recording ERG, PERG and VEP multifocal electrofunctional responses in real-time - Process and system for determining the topography of bioelectric response signals of a visual system including a patient's retina, optical nerve or a projection thereof at the level of the central cortex, following visual stimulation through a surface arranged in front of the patient's eye. An image which comprises a plurality of cells is displayed as stimulation, each cell being activated or deactivated according to a corresponding digital time function represented by a cyclical succession of binary m-sequences of duration (T) formed from a plurality of activation symbols (N), each having a duration (Ts), the m-sequences of the various cells being obtained cyclically from a mother m-sequence. The process determines the total bioelectric response of the visual system, the response associated with each cell being determined by the total response of the visual system using a cross-correlation with a suitable translated version of a mother m-sequence. The calculation of the response of each cell is updated at the end of each symbol time (Ts), thereby making it possible to follow the evolution of the calculated response of each cell in real-time, without awaiting the end of an m-sequence. | 04-15-2010 |
20100097572 | Deforming method for deformable mirror, aberration compensation method for optical apparatus, aberration compensation method of ocular fundus observation apparatus, aberration compensation apparatus, optical apparatus and ocular fundus observation apparatus - A deforming method for a deformable mirror having plural electrodes and a reflective membrane which are distorted by static voltages. The Zernike voltage template used to deform a deformable mirror is adapted for aberration correction by calibrating each component template according to the specificity of the mirror. The voltages applied to the electrodes to form a surface profile of the reflective membrane are measured based on the reflection light from the membrane. A certain number of voltage-by-electrode patterns each of which corresponds to a different reference profile of the reflective membrane and specifies each set of a voltage and an electrode to which the voltage is to be applied are stored preliminarily. The reflective membrane is deformed to a desired profile by superposing preliminarily stored voltage-by-electrode patterns. The deformation of the mirror is corrected by calibrating each template according to the operational environment. | 04-22-2010 |
20100103372 | LASER CONTROL WITH PHASE PLATE FEEDBACK - An ophthalmic imaging system includes a light source, focusing optics, compensating optics, and a computer that coordinates both of the optics to optimize the Diffraction Limited Point Spread Function (DL-PSF) of the imaging light beam. In detail, the compensating optics includes a customized phase plate that provides substantially complete compensation for static aberrations introduced by an eye into the imaging light beam. Further, the computer measures an operational error signal that results from dynamic aberrations. The computer then uses the error signal to control the compensating optics and thereby optimize the DL-PSF by compensating for both static and dynamic aberrations. For an alternate embodiment, an active mirror can be included in the compensating optics to provide additional compensation for the dynamic aberrations. | 04-29-2010 |
20100103373 | Vision modification with reflected image - Various embodiments of methods and systems for improving and enhancing vision are disclosed. Adjustable lenses or optical systems may be used to provide adaptive vision modification. In some embodiments, vision modification may be responsive to the current state of the user's visual system. Certain embodiments provide correction of the subject's near and far vision. Other embodiments provide enhancement of vision beyond the physiological ranges of focal length or magnification. | 04-29-2010 |
20100118265 | METHOD FOR DETERMINING CORRECTION CHARACTERISTICS FOR A VISION AID - A method for determining correction characteristics for a vision aid for at least one eye of a person wherein: a vision impression of the person is determined in a first usage condition after which a vision impression of the person is determined in a second usage condition after which the wavefront of the person is optimized by determining the correction characteristics for the vision aid until the vision impression of the person in the second usage condition at least approximately matches the vision impression of the person in the first usage condition. | 05-13-2010 |
20100165289 | OPTICAL TOMOGRAPHIC IMAGING METHOD AND APPARATUS - An optical tomographic imaging method is provided in which light from a light source is split into a measuring beam and a reference beam, the measuring beam being moved by a scanning optical system and guided to an object to be examined, the reference beam being guided to a reference mirror, and in which a tomogram of the object is generated from a return beam of the measuring beam reflected or scattered by the object and the reference beam reflected by the reference mirror. The method includes acquiring longitudinal sectional information on the object, calculating depth-position information on the object from the longitudinal sectional information, and acquiring a three-dimensional surface image of the object by controlling a reference-path length defined by the reference mirror and a scanning operation of the scanning optical system in accordance with the depth-position information on the object. | 07-01-2010 |
20100165290 | USER-PROPOSED ENTRY FIELD(S) FOR CUSTOMIZED DATA ANALYSIS/PRESENTATION - One embodiment of the present invention is a method to not limit the device's manipulation of the data to that of the manufacturer, but to allow greater freedom for customization by the individual user for their preference. | 07-01-2010 |
20100182566 | Method and arrangement for determining the individually required addition of a vision aid - The invention is directed to a method for determining the individually required addition (Add) of a vision assist for an eye, the method having the following steps:
| 07-22-2010 |
20100208200 | INTRAOCULAR LENS ALIGNMENT USING CORNEAL CENTER - A method for generating a radial alignment guide for an eye includes collecting preoperative corneal topography data. The data includes a corneal vertex location and a pupil center location for an eye that is not dilated. The method then includes locating a dilated pupil center for the eye after the eye is dilated. The method further includes determining an adjusted offset between the corneal vertex and the dilated pupil center and displaying alignment data on an image of the eye based on the adjusted offset. | 08-19-2010 |
20100231855 | Application of neuro-ocular wavefront data in vision correction - The present disclosure provides systems and methods for diagnosing and treating subjects using neuro-ocular wavefront data. As such, in some embodiments, among others, neuro-ocular wavefront data is obtained, and one or more characteristics of a visual system are ascertained from the neuro-ocular wavefront data. | 09-16-2010 |
20100277689 | Reflectometry/Interferometry system and method for corneal plane positioning - A system for positioning an eye of a patient, for example, for laser ophthalmic surgery includes a reflectometer adapted to receive as input a reflected beam from an anterior surface of a cornea of an eye of a patient. The interferometer is calibratable to a desired position of the corneal anterior surface. A comparator is in signal communication with the interferometer and is adapted to calculate from the input a difference between an actual position and the desired position of the corneal anterior surface. A device is in signal communication with the comparator for moving the patient a distance in a direction for matching the actual position to the desired position of the corneal anterior surface. | 11-04-2010 |
20100290004 | Characterization of Retinal Parameters by Circular Profile Analysis - Certain diseases of the retina are diagnosed by circular profile analysis of retinal parameters, such as thickness. Retinal thickness around a user-defined circle on the retina is measured by three-dimensional optical coherence tomography or other ophthalmological techniques. Abnormally thin regions are identified by comparing a measured function of thickness vs. polar angle to a reference function of thickness vs. polar angle. A degree of abnormality is characterized by the ratio of the integral of the measured thickness function to the integral of the reference thickness function over the abnormally thin region, as specified by a range of polar angles. | 11-18-2010 |
20110001926 | Device and Method for Performing Measurements During a Surgical Intervention by Means of an Optical Coherence Tomography Device - A device for a therapeutic treatment of the eye by means of a laser is provided, which allows a real-time monitoring of the treatment. In particular, the laser light is supplied to the treatment region via a fibre. The monitoring of the treatment happens by means of optical coherence tomography (OCT). To this end the OCT measurement beam and the treatment laser light are coupled in a probe that is put onto the eye and allows to focus the OCT measurement beam on the tissue region inside of the eye that is treated at that moment. | 01-06-2011 |
20110051083 | NO-HISTORY METHOD FOR INTRAOCULAR LENS POWER ADJUSTMENT AFTER EXCIMER LASER REFRACTIVE SURGERY - Systems and methods for using a new corneal ratio, referred to as the Geggel ratio, to estimate how much treatment a patient received at an original myopic or mixed astigmatism excimer laser refractive surgery. The Geggel ratio represents the ratio of the measure of a pre-IOL central pachymetry to a measure of a pre-IOL superior pachymetry. The estimated laser ablation depth (ELAD) is used in a derived linear regression equation to determine an IOL power adjustment that is added to the standard SRK/T formula used to determine IOL power. | 03-03-2011 |
20110116039 | ACCOMMODATION COMPENSATION SYSTEMS AND METHODS - Methods and systems for obtaining an ocular aberration measurement of an eye of a patient are provided. Exemplary techniques involve obtaining a first induced metric for the eye that corresponds to a first accommodation state of the eye, obtaining a second induced metric for the eye that corresponds to a second accommodation state of the eye, and determining a natural metric of the eye based on the first and second induced metrics. An induced metric may include a pupil size or a spherical aberration. Techniques can also include determining a target metric for the eye base on the natural metric, determining whether an actual metric of the eye meets the target metric, obtaining an ocular aberration measurement of the eye if the actual metric meets the target metric, and determining a treatment for the eye based on the ocular aberration measurement. | 05-19-2011 |
20110128497 | COMPOUND MODULATION TRANSFER FUNCTION FOR LASER SURGERY AND OTHER OPTICAL APPLICATIONS - Methods, devices, and systems establish an optical surface shape that mitigates or treats a vision condition in a patient. An optical surface shape for a particular patient can be determined using a set of patient parameters for the specific patient by using a compound modulation transfer function (CMTF). The compound modulation transfer function can include a combination of modulation transfer functions (MTF's) at a plurality of distinct frequencies. | 06-02-2011 |
20110134390 | EYE MODEL FOR USE IN OPTHALMOLOGICAL MEASUREMENTS - An artificial eye model for use in ophthalmological measurements exhibits a simulation of at least one eye structure, for instance of a cornea or of a crystalline lens. In accordance with the invention the simulation possesses fluorescent properties. In this way, a beam expansion as a result of multiple scattering in the case of scattered-light-based photographic recordings can be avoided. Instead of this, a sharp-contour imaging of the simulated eye structures is made possible. | 06-09-2011 |
20110134391 | WAVEFRONT PROPAGATION FROM ONE PLANE TO ANOTHER - The present invention provides methods, systems and software for scaling optical aberration measurements of optical systems. In one embodiment, the present invention provides a method of reconstructing optical tissues of an eye. The method comprises transmitting an image through the optical tissues of the eye. Aberration data from the transmitted image is measured across the optical tissues of the eye at a first plane. A conversion algorithm is applied to the data, converting it to corrective optical power data that can be used as a basis for constructing a treatment for the eye at a second plane. | 06-09-2011 |
20110149239 | OPTICAL DIAGNOSIS USING MEASUREMENT SEQUENCE - Devices, systems, and methods that facilitate optical analysis, particularly for the diagnosis and treatment of refractive errors of the eye. An optical diagnostic method for an eye includes obtaining a sequence of aberration measurements of the eye, identifying an outlier aberration measurement of the sequence of aberration measurements, and excluding the outlier aberration measurement from the sequence of aberration measurements to produce a qualified sequence of aberration measurements. The sequence of aberrations measurements can be obtained by using a wavefront sensor. An optical correction for the eye can be formulated in response to the qualified sequence of aberration measurements. | 06-23-2011 |
20110149240 | ASSESSMENT OF TOPOGRAPHIC SEMI-MERIDIAN PARAMETERS FOR CORNEAL ASTIGMATISM ANALYSIS AND VECTOR PLANNING TREATMENT - Techniques are disclosed in which a topographic parameter is determined in each semi-meridian of the eye by considering the topography in each of three concentric zones from the central axis at 3 mm, 5 mm, and 7 mm and assigning weighting factors for each zone, By selectively treating the weighted values in the three zones, parameters of magnitude and meridian can be obtained for each semi-meridian. From these parameters, a single topographic value for the entire eye (CorT) can be found as well as a value representing topographic disparity (TD) between the two semi-meridians. The topography values for the semi-meridians are used in a vector planning system to obtain treatment parameters in a single step operation. | 06-23-2011 |
20110149241 | ZONE EXTENSION SYSTEMS AND METHODS - Wavefront measurements of eyes are often taken when the pupil is in a first configuration in an evaluation context. The results can be represented by a set of basis function coefficients. Prescriptive treatments are often applied in a treatment context, which is different from the evaluation context. Hence, the patient pupil can be in a different, second configuration, during treatment. Systems and methods are provided for determining a transformed set of basis function coefficients, based on a difference between the first and second configurations, which can be used to establish the vision treatment. | 06-23-2011 |
20110170059 | PHYSICAL MODEL EYE SYSTEMS AND METHODS - An optically realistic model eye is described. The optically realistic eye model has an optical axis and includes: an anterior replaceable module comprising a model cornea, model iris and model lens rotatably mounted for rotation about said axis, said module being representative of an emmetropic or pathological natural eye; an enclosure located posterior to said module and adapted to enclose a retinal area within which an image of an external object is brought to focus by said module; and a photoactive device movable within said enclosure and retinal area and adapted to detect or reflect a portion of the image for inspection, processing or analysis. | 07-14-2011 |
20110181836 | PHANTOM FOR RENDERING BIOLOGICAL TISSUE REGIONS - Models of anatomical parts and methods utilizing and fabricating such anatomical models are provided. The model can include an assembly of one or more optically transmissive media having a first portion and a second portion. The one or more optically transmissive media can be configured to provide similar optical properties as that between two regions of the anatomical part. For example, in an example eye model, the two regions can be a corneal surface and/or retina regions of an eye. A rendered retina can be formed in the second portion of the assembly and can be representative of the retina of the eye. The rendered retina can have one or more features associated with the retina of the eye. | 07-28-2011 |
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 |
20110199576 | METHODS AND DEVICES FOR MEASURING TEAR FILM AND DIAGNOSING TEAR DISORDERS - Methods and devices measure eye blinks and tear film lipid and aqueous layer thickness before and following ophthalmic formula application onto the ocular surface, especially wherein the ophthalmic formula is an artificial tear. The methods and devices are suitable for dry eye diagnosis. The methods and devices are suitable for use to evaluate ophthalmic formula effects on the tear film and to use such information to diagnose ophthalmic formula treatment of ocular disease conditions such as dry eye in the absence of contact lens wear or post-surgical eye drop treatment and diagnosis. The methods and devices are also suitable for use in the optimization of ophthalmic drug dosage forms and sustained drug release. | 08-18-2011 |
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 |
20110222020 | Methods, Systems and Computer Program Products for Distributed Scanning for Motion Artifact Reduction in Optical Coherence Tomography - Methods of reducing motion artifacts in Optical Coherence Tomography (OCT) include scanning a sample with a scan pattern to acquire OCT data at a plurality of data locations. The data locations are distributed in the scan pattern across the sample such that at least some spatially adjacent data locations are acquired non-sequentially in time. A profile of the sample corresponding to a sample surface or an aspect of an internal structure of the sample is estimated responsive the OCT data. | 09-15-2011 |
20110228218 | IMAGING SYSTEM - Imaging systems are provided allowing examination of different object regions spaced apart in a depth direction by visual microscopy and by optical coherence tomography. An axial field of view and a lateral resolution is varied depending on which object region is examined by the imaging system. The proposed imaging systems are in particular applicable for thorough examination of the human eye. | 09-22-2011 |
20110228219 | OPHTHALMIC SIMULATOR - A metamorphopsia simulator is capable of numerically simulating deformation of the retina of a metamorphopsia patient and irregularity in an arrangement of visual cells caused thereby. The metamorphopsia simulator of the present invention uses a method of digitizing a deformation amount of the retina according to an expression based on a probability density function, to find a movement amount of visual cells, and according to the movement amount of visual cells, find distortion of an image observed by the metamorphopsia patient. | 09-22-2011 |
20110242482 | System and Method for Determining and Predicting IOL Power in Situ - The present invention relates to a system and a method for determining the power of an artificial intraocular lens (IOL) in situ. The invention furthermore relates to a system and a method for predicting the optical outcome of IOL surgery. Use of the system may provide prevention, treatment, or amelioration of diseases and disorders affecting the lens of the eye and which may benefit from IOL surgery. Moreover, the invention relates to a computer-readable medium for implementing such a system on a computer. | 10-06-2011 |
20110249236 | SCHEMATIC EYE AND ADJUSTMENT METHOD AND EVALUATION METHOD FOR OPTICAL COHERENCE TOMOGRAPHY APPARATUS - A schematic eye used for the evaluation of the optical system of an optical coherence tomography apparatus which captures a tomogram of the fundus includes the first optical member which irradiated light from the optical system strikes and the second optical member which irradiated light from the first optical member strikes. A plurality of layers having different scattering intensities in the incident direction of irradiated light are formed on the second optical member. | 10-13-2011 |
20110255053 | SYSTEM AND METHOD FOR ANALYZING WAVEFRONT ABERRATIONS - A method of creating a statistical model for use in predicting vision correction prescriptions for patients is disclosed. The method comprises obtaining a plurality of wavefront aberration measurements from a plurality of patient's eyes, obtaining a plurality of visual acuity measurements from the plurality of patients, applying values associated with the plurality of wavefront measurements to an input layer of a statistical model, applying values associated with the plurality of visual acuity measurements to an output layer of the statistical model, and generating a plurality of weight values associated with respective nodes of the statistical model based on the applied values associated with the plurality of wavefront measurements and corresponding values associated with the plurality of visual acuity measurements. | 10-20-2011 |
20110261319 | DEVICE AND METHOD FOR CALIBRATING RETINOSCOPES - A device for calibrating retinoscopes for diverging and/or converging streak and spot retinoscopy and a method for calibrating retinoscopes to produce a given convergence or divergence of light emitted from the retinoscope from a fixed retinoscopic working distance to produce a predetermined pupillary reflex endpoint at neutralization of a refractive error, thereby resulting in a more accurate corrective eye prescriptions and evaluation of the visual system. | 10-27-2011 |
20110267579 | INTEGRATED SURGICAL MICROSCOPE AND WAVEFRONT SENSOR - A wavefront sensor is integrated with a surgical microscope for allowing a doctor to make repeated wavefront measurements of a patient's eye while the patient remains on an operating table in the surgical position. The device includes a wavefront sensor optically aligned with a surgical microscope such that their fields of view at least partially overlap. The inclusion of lightweight, compact diffractive optical components in the wavefront sensor allows the integrated device to be supported on a balancing mechanism above a patient's head during a surgical procedure. As a result, the need to reposition the device and/or the patient between measuring optical properties of the eye and performing surgical procedures on the eye is eliminated. Many surgical procedures may be improved or enhanced using the integrated device, including but not limited to cataract surgery, Conductive Keratoplasty, Lasik surgery, and corneal corrective surgery. | 11-03-2011 |
20110279774 | SYSTEMS AND METHODS FOR PREDICTION OF OBJECTIVE VISUAL ACUITY BASED ON WAVEFRONT MEASUREMENTS - Methods, devices, and systems for predicting an optical acuity measure of an optical system of an eye. An optical acuity measure can be predicted by determining a point spread function based on a wavefront measurement of an eye, convolving a resolution target with the point spread function to produce an image, and predicting the optical acuity measure of the optical system of the eye based on the image. | 11-17-2011 |
20110292336 | ANGLE INDICATOR FOR OCULAR MEASUREMENTS - Implantation of an accommodating intraocular lens in an eye may require the accurate measurement of the size, circumference, or diameter of the capsular bag of the eye. A flexible ring or ring portion may be temporarily or permanently inserted into the capsular bag for measuring the circumference of the capsular bag, for example, after extraction of a natural lens from the capsular bag. The ring or ring portion is generally compressible to fit through a surgical incision, then expands to fill the capsular bag along an equatorial region. The ring or ring portion includes a central component that changes shape and/or angle as the ring or ring portion is compressed. The shape change is generally correlated to the size of the capsular bag and may be visually measured through the cornea, the measurement being generally independent of corneal magnification. The measurement may be used to determine or calculate information about the capsular bag such as its size, elasticity, accommodative range, and so forth. | 12-01-2011 |
20120026460 | COMPOUND MODULATION TRANSFER FUNCTION FOR LASER SURGERY AND OTHER OPTICAL APPLICATIONS - Methods, devices, and systems establish an optical surface shape that mitigates or treats a vision condition in a patient. An optical surface shape for a particular patient can be determined using a set of patient parameters for the specific patient by using a compound modulation transfer function (CMTF). The compound modulation transfer function can include a combination of modulation transfer functions (MTF's) at a plurality of distinct frequencies. | 02-02-2012 |
20120044454 | CUSTOMIZED INTRAOCULAR LENS POWER CALCULATION SYSTEM AND METHOD - Selecting an optimal intraocular lens (IOL) from a plurality of IOLs for implanting in a subject eye, including measuring anterior corneal topography (ACT), axial length (AXL), and anterior chamber depth (ACD) of a subject eye; selecting a default equivalent refractive index depending on preoperative patient's stage or calculating a personalized value or introducing a complete topographic representation if posterior corneal data are available; creating a customized model of the subject eye with each of a plurality of identified intraocular lenses (IOL) implanted, performing a ray tracing through that model eye; calculating from the ray tracing a RpMTF or RMTF value; and selecting the IOL corresponding to the highest RpMTF or RMTF value for implanting in the subject eye. | 02-23-2012 |
20120057125 | Adaptive optics ocular fundus observation device - An adaptive optics ocular fundus observation device that utilizes adaptive optics in observing ocular fundus, which is characterized by further comprising a judging means for judging whether an arrangement of the retinal locations devoid of nerve cells reflects a retinal nerve fiber tract. | 03-08-2012 |
20120069297 | EYEGLASS PRESCRIPTION METHOD - In general, in some embodiments, the disclosure provides a method that includes making a subjective refraction of a person to determine information about the person's vision, making a wavefront measurement of one or both of the person's eyes to determine information about the optical properties of one or both of the person's eyes (e.g., aberrations), calculating a prescription for the person based on the information about the person's vision and the information about the optical properties of one or both of the person's eyes, and outputting the prescription. | 03-22-2012 |
20120081663 | Simulator for use in ophthalmological measurements - A simulator to be used in ophthalmological measurements includes a display apparatus and a control device. The control device is adapted to control the display apparatus in such a manner that the display apparatus displays an image that is adapted to simulate the arrangement of a pupillary midpoint relative to a reference structure. | 04-05-2012 |
20120120367 | WAVEFRONT PROPAGATION FROM ONE PLANE TO ANOTHER - The present invention provides methods, systems and software for scaling optical aberration measurements of optical systems. In one embodiment, the present invention provides a method of reconstructing optical tissues of an eye. The method comprises transmitting an image through the optical tissues of the eye. Aberration data from the transmitted image is measured across the optical tissues of the eye at a first plane. A conversion algorithm is applied to the data, converting it to corrective optical power data that can be used as a basis for constructing a treatment for the eye at a second plane. | 05-17-2012 |
20120154746 | FUNDUS IMAGING METHOD, FUNDUS IMAGING APPARATUS, AND STORAGE MEDIUM - A fundus imaging apparatus includes an aberration measurement unit adapted to measure an aberration of reflected light obtained by irradiating an object to be examined with measurement light; an aberration correction unit adapted to correct an aberration of light in accordance with the measured aberration; a control unit adapted to repeatedly control processing of the aberration measurement unit and the aberration correction unit; and a changing unit adapted to change a first function of a predetermined order representing the aberration to a second function including an order higher than the predetermined order in accordance with at least one of a measurement result obtained by the aberration measurement unit and a control result obtained by the control unit. The aberration correction unit corrects an aberration expressed by the second function. | 06-21-2012 |
20120188505 | MODEL EYE PRODUCING A SPECKLE PATTERN HAVING A REDUCED BRIGHT-TO-DARK RATIO - A model eye includes an optically transmissive structure having a front curved surface to receive a coherent light beam, and an opposite rear planar surface for directing a portion of the coherent light beam back out the model eye through the front curved surface; and a material structure adhered to the rear planar surface of the optically transmissive structure that has a characteristic to cause a speckle pattern of the portion of the coherent light beam that is directed back out the front curved surface of the optically transmissive structure to have a bright-to-dark ratio of less than 2:1. In some embodiments, the material structure may include a fabric-reinforced polyethylene tape adhered to the rear planar surface of the optically transmissive structure by an adhesive. One example material structure which may be employed is duct tape. | 07-26-2012 |
20120188506 | OPTIMIZING VISION CORRECTION PROCEDURES - In one embodiment a wavefront sensor is configured to measure real time aberration values of a wavefront returned from the eye of a patient while an image of the eye of the patient is being viewed by a surgeon during an on-going vision correction procedure and for providing an output signal indicating real time aberration values and a display, coupled to the wavefront sensor, is configured to show a dynamic display indicating the real time aberration values to the surgeon and configured to be viewed by the surgeon while also viewing the image of the eye of the patient during the on-going vision correction procedure. | 07-26-2012 |
20120188507 | AUTOMATED VISION SCREENING APPARATUS AND METHOD - A system and method for screening vision including: requesting user information; performing objective visual acuity tests; and reporting visual acuity results without assistance from another person. | 07-26-2012 |
20120218514 | MEDICAL DEVICE - The present invention relates to a device comprising a shaft having at least a first portion and a second portion that can adopt a closed position in which the first and second portions are positioned adjacent each other and an open position in which the first and second portions are positioned distant from each other, one or both of the first and second portions housing or forming part of one or more of an ophthalmoscope, an otoscope, a tendon hammer, a tuning fork and a red hat pin. Also provided are improved otoscope heads and means to protect the functional heads of medical tools when not in use. | 08-30-2012 |
20120236257 | Vision Modification with reflected image - Various embodiments of methods and systems for improving and enhancing vision are disclosed. Adjustable lenses or optical systems may be used to provide adaptive vision modification. In some embodiments, vision modification may be responsive to the current state of the user's visual system. Certain embodiments provide correction of the subject's near and far vision. Other embodiments provide enhancement of vision beyond the physiological ranges of focal length or magnification. | 09-20-2012 |
20120236258 | ULTRASONIC SCANNING PROBE WITH A TUNING FORK-TYPE OSCILLATOR AND FEEDBACK CONTROL THEREOF - A mechanical scanning device is composed of an oscillating beam onto which a transducer is mounted, part of which is flexible such that the beam will oscillate at a frequency between 8 and 15 Hz when mechanically energized. To sustain oscillation, energy is supplied by means of two electromagnetic coils acting on two permanent magnets mounted on either side of the beam. In order to improve the linear performance of the probe, feedback control was employed. A position sensor along with supporting electronics was designed to provide control signal for the feedback system. | 09-20-2012 |
20120274896 | SYSTEMS, METHODS AND COMPUTER-READABLE MEDIUM FOR DETERMINING DEPTH-RESOLVED PHYSICAL AND/OR OPTICAL PROPERTIES OF SCATTERING MEDIA BY ANALYZING MEASURED DATA OVER A RANGE OF DEPTHS - In depth-resolved imaging of scattering media, incident light interacts with tissue in a complex way before the signal reaches the detector: Light interacts with media between the light source and a specific depth, then scatters at that depth and the backscattered light again interacts with media on its way to the detector. The resulting depth-resolved signal therefore likely does not directly represent a physical or optical property of the media at those depths. Exemplary systems, methods and computer-accessible medium can determine physical or optical properties based on such depth-resolved signals. For example, almost all the light can interact with the media, and that the energy of the incident light at a certain depth is likely therefore related to the integral of the scattered light from all deeper locations. Based on the detected signals, the properties of the media can be estimated in an iterative way. | 11-01-2012 |
20130010257 | SYSTEM FOR IN VIVO ANALYSIS OF TEAR FILM IN THE HUMAN EYE VIA PHASE SHIFTING INTERFEROMETRY - An in vivo method of characterizing dynamic tear films has been developed using a near infrared phase-shifting interferometer. This interferometer continuously measures light reflected from the tear film, allowing precision analysis of the dynamic surface topography. Movies showing the tear film behavior may be generated along with quantitative metrics describing the tear film surface as it changes in time. | 01-10-2013 |
20130010258 | IMAGING APPARATUS AND IMAGING METHOD - An imaging apparatus includes an irradiation unit configured to irradiate an object to be examined with a plurality of measuring beams, a scanning unit configured to perform scanning with the plurality of measuring beams, a specifying unit configured to specify a size of an overlap region where scanning regions of the plurality of measuring beams on the object to be examined overlap one another, and a change unit configured to change one of a center-to-center distance of the scanning regions and a size of each of the scanning regions according to the size of the overlap region. | 01-10-2013 |
20130021574 | INTEGRATED SURGICAL MICROSCOPE AND WAVEFRONT SENSOR - A wavefront sensor is integrated with a surgical microscope for allowing a doctor to make repeated wavefront measurements of a patient's eye while the patient remains on an operating table in the surgical position. The device includes a wavefront sensor optically aligned with a surgical microscope such that their fields of view at least partially overlap. The inclusion of lightweight, compact diffractive optical components in the wavefront sensor allows the integrated device to be supported on a balancing mechanism above a patient's head during a surgical procedure. As a result, the need to reposition the device and/or the patient between measuring optical properties of the eye and performing surgical procedures on the eye is eliminated. Many surgical procedures may be improved or enhanced using the integrated device, including but not limited to cataract surgery, Conductive Keratoplasty, Lasik surgery, and corneal corrective surgery. | 01-24-2013 |
20130100403 | Determining physical lengths in an eye using multiple refractive indices - In certain embodiments, determining physical lengths of an eye includes determining an optical length of each segment of a plurality of segments of an axis of the eye, where each segment corresponds to a portion of the eye. A refractive index is determined for each segment. A physical length of each segment is determined according to the optical length and the refractive index of the segment. | 04-25-2013 |
20130135581 | Integrated Refractor - The present invention contemplates a refraction system to integrate the objective and subjective measurement into a single instrument. The present invention also contemplates a refraction system with open-field and binocular viewing to overcome instrument myopia and to mimic viewing experience of a phoropter. The present invention further contemplates a refraction system employing a pair of optical trombones to eliminate the need of flipping plurality sets of trial lenses for defocus power correction. | 05-30-2013 |
20130169930 | Optical device with active user-based aberration correction - Exemplary embodiments enable an enhanced direct-viewing optical device to make customized adjustments that accommodate optical aberrations of a current user. In some instances a real-time adjustment of the transformable optical elements is based on known corrective optical parameters associated with a current user. In some implementations a control module may process currently updated wavefront measurements as a basis for determining appropriate real-time adjustment of the transformable optical elements to produce a specified change in optical wavefront at an exit pupil of the direct-viewing device. Possible transformable optical elements include refractive and/or reflective and/or diffractive and/or transmissive characteristics that are adjusted based on current performance viewing factors for a given field of view of the direct-viewing device. Dynamic repositioning and/or transformation of corrective optical elements may be based on a detected shift of a tracked gaze direction of a current user of the direct-viewing device. | 07-04-2013 |
20130201448 | ABERRATION CORRECTION METHOD AND ABERRATION CORRECTION APPARATUS - To increase the speed of aberration correction, provided is an aberration correction method, including: a step of selecting a first polarized component of reflected light obtained by irradiating an object to be inspected with measuring light; a step of measuring an aberration of the first polarized component; a step of correcting the aberration of the first polarized component by controlling a first aberration correction unit in accordance with a measured value of the aberration of the first polarized component; and a step of correcting, in a case where a value of the aberration corrected in the first aberration correcting step is smaller than a predetermined value, an aberration of a second polarized component of the reflected light, which is different from the first polarized component, by controlling a second aberration correction unit based on a control for the first aberration correction unit in the case. | 08-08-2013 |
20130242256 | METHOD AND APPARATUS FOR DETECTING ACCOMMODATION - A sensor system includes at least two sensors for distinguishing accommodative stimuli from changes in ambient lights levels and task-induced changes in the pupil diameter. When implanted, the first sensor is disposed completely within the pupil; even when fully constricted, the pupil does not occlude the first sensor, allowing the sensor to make precise measurements of ambient luminous flux levels. The pupil occludes part of the second sensor's active area(s) as the pupil dilates and constricts. As a result, the second sensor measures both ambient luminous flux and pupil diameter. A processor estimates the pupil diameter and determines whether it's changing in response to accommodative stimuli or other factors by comparing to predetermined values. The sensor system sends a signal to an optical component, which in turn can respond by changing optical power to focus for near vision upon detection of accommodative stimuli. | 09-19-2013 |
20130242257 | INDUCED HIGH ORDER ABERRATIONS CORRESPONDING TO GEOMETRICAL TRANSFORMATIONS - Wavefront measurements of eyes are typically taken when the pupil is in a first configuration in an evaluation context. The results can be represented by a set of basis function coefficients. Prescriptive treatments are often applied in a treatment context, which is different from the evaluation context. Hence, the patient pupil can be in a different, second configuration, during treatment. Systems and methods are provided for determining a transformed set of basis function coefficients, based on a difference between the first and second configurations, which can be used to establish the vision treatment. | 09-19-2013 |
20130258279 | ZONE EXTENSION SYSTEMS AND METHODS - Wavefront measurements of eyes are often taken when the pupil is in a first configuration in an evaluation context. The results can be represented by a set of basis function coefficients. Prescriptive treatments are often applied in a treatment context, which is different from the evaluation context. Hence, the patient pupil can be in a different, second configuration, during treatment. Systems and methods are provided for determining a transformed set of basis function coefficients, based on a difference between the first and second configurations, which can be used to establish the vision treatment. | 10-03-2013 |
20130265541 | OPTIMIZING VISION CORRECTION PROCEDURES - In one embodiment, a wavefront sensor is combined with a slit lamp eye examination device so that real time aberration values of an eye being examined can be viewed during a slit lamp eye examination session. | 10-10-2013 |
20130271727 | OPHTHALMIC APPARATUS - An ophthalmic apparatus includes an apparatus fixing unit, an optometric unit configured to move relative to the apparatus fixing unit, and a face support unit configured to fix an eye to be examined as an inspection target of the optometric unit. The ophthalmic apparatus includes: a face support moving unit configured to move the face support unit relative to the apparatus fixing unit; and an optometric unit moving unit configured to move the optometric unit relative to the apparatus fixing unit. | 10-17-2013 |
20130293837 | OPHTHALMIC APPARATUS - An ophthalmic apparatus which is configured to inspect a plurality of eye characteristics of an eye to be examined which is fixed by a face support unit, the apparatus comprises: an optometric unit configured to include a first optometric portion including a first optical system for inspecting a first eye characteristic of the eye, and a second optometric portion including a second optical system for inspecting a second eye characteristic different from the first eye characteristic; and a changing unit configured to change a direction of the optometric unit relative to the eye to switch to inspection by one of the first optometric portion and the second optometric portion. | 11-07-2013 |
20130342810 | EYEBALL BIOLOGICAL INFORMATION COLLECTION DEVICE AND METHOD FOR COLLECTING EYEBALL BIOLOGICAL INFORMATION - According to one aspect of the invention, an eyeball biological information collection device that is arranged to be worn by a subject includes a ultrasonic sensor part and a pressing part. The ultrasonic sensor part is configured to transmit an ultrasonic wave to an eyeball of the subject and receive a reflection wave of the ultrasonic wave reflected within the eyeball at a time of use of the eyeball biological information collection device. The pressing part is configured to press the ultrasonic sensor part to eyelid of the subject at the time of use. | 12-26-2013 |
20140016091 | COMPOUND MODULATION TRANSFER FUNCTION FOR LASER SURGERY AND OTHER OPTICAL APPLICATIONS - Methods, devices, and systems establish an optical surface shape that mitigates or treats a vision condition in a patient. An optical surface shape for a particular patient can be determined using a set of patient parameters for the specific patient by using a compound modulation transfer function (CMTF). The compound modulation transfer function can include a combination of modulation transfer functions (MTF's) at a plurality of distinct frequencies. | 01-16-2014 |
20140022509 | Compact Wavefront Sensor Module and Its Attachment to or Integration with an Ophthalmic Instrument - One embodiment disclosed is a compact wavefront sensor module to be attached to or integrated with an ophthalmic instrument for eye examination and/or vision correction procedures. The front lens for relaying the wavefront from the eye to a wavefront sampling plane is positioned at the optical input port of the wavefront sensor module. The front lens is shared by the wavefront sensor and the ophthalmic instrument, and the wavefront sensor module can be made very compact while still being able to cover a large eye wavefront measurement diopter range. | 01-23-2014 |
20140028973 | METHOD AND APPARATUS FOR ENGAGING AND PROVIDING VISION CORRECTION OPTIONS TO PATIENTS FROM A REMOTE LOCATION - A method and system for providing vision correction to a patient is disclosed. The method and system employ a vision care POD to engage and provide vision diagnostics and correction options to a patient. More specifically, method and system may include educating the population of a geographic area through sources that target particular identified groups in need of vision correction; providing an eye examination to patients using a vision care POD to generate a personalized vision correction ID card; providing one or more vision correction solution(s) to the patient; supplying the patient with the one or more vision correction solution(s) and the corresponding training for the solution(s); and providing ongoing care and support to the patient. | 01-30-2014 |
20140078464 | PUPIL DEPENDENT WAVEFRONT REFRACTION - A method of determining an ophthalmic prescription (Rx) for a patient's eye, includes obtaining a wavefront measurement of the patient's eye; determining a first Rx for the patient's eye from the wavefront measurement, the first Rx corresponding to a maximum value of a merit function calculated from the wavefront measurement of the patient's eye for a first size of the pupil of the patient's eye; determining one or more additional Rx's of the patient's eye for one or more additional pupil sizes different from the first pupil size, wherein each additional Rx is determined for a corresponding size by calculating a value of the merit function for the previously-calculated Rx at the corresponding size and searching for an Rx at the corresponding size that provides a larger value of the merit function than the previously-calculated Rx at the corresponding size; determining a final Rx based on the first Rx and the additional Rx's; and outputting the final Rx. | 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 |
20140111765 | SYSTEMS AND METHODS FOR CUSTOMIZING ADJUSTABLE INTRAOCULAR LENSES - The lens geometry and power of an intraocular lens is optimized to provide both distance and near vision correction for a patient. The optimization may be based on one or more measured accommodation-related parameters and one or more estimated accommodation-related parameters. An accommodative amplitude may be predicted based on the measured and estimated accommodation-related parameters, and the optimized the intraocular lens geometry and power established based thereon. | 04-24-2014 |
20140125948 | Positioning Unit And Observation Device - A positioning unit for positioning an optical unit in an optical path of a microscope between a microscope lens and in front of an eye to be examined includes a connection device and a positioning device. The connection device couples the positioning unit to the microscope. The positioning device moves the optical element relative to the microscope in a longitudinal direction of the optical path. The positioning unit is predominantly formed from aluminum free metal. | 05-08-2014 |
20140139804 | System and Method for Characterising Eye-Related Systems - Described herein is a light directing assembly for use in an object analysis system. The light directing assembly includes a plurality of optical relay assemblies. Each optical relay assembly includes at least one optical element configured to relay an interrogation beam from a light transmission system to an object and relay a return beam from the object to the light transmission system, the return beam being generated by reflection or back scattering of the interrogation beam by the object. Each optical relay assembly defines an interrogation angle at which the interrogation beam relayed by the optical relay assembly reaches the object, and an optical path length being the distance from the light transmission system to the object travelled by an interrogation beam via the optical relay assembly. The plurality of optical relay assemblies are further configured such that the optical path length for a given optical relay assembly has a predefined relationship with the optical path lengths of the other optical relay assemblies. | 05-22-2014 |
20140160428 | Model Eye Producing a Speckle Pattern Having a Reduced Bright-to-Dark Ratio - A model eye includes an optically transmissive structure having a front curved surface to receive a coherent light beam, and an opposite rear planar surface for directing a portion of the coherent light beam back out the model eye through the front curved surface; and a material structure adhered to the rear planar surface of the optically transmissive structure that has a characteristic to cause a speckle pattern of the portion of the coherent light beam that is directed back out the front curved surface of the optically transmissive structure to have a bright-to-dark ratio of less than 2:1. In some embodiments, the material structure may include a fabric-reinforced polyethylene tape adhered to the rear planar surface of the optically transmissive structure by an adhesive. One example material structure which may be employed is duct tape. | 06-12-2014 |
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 |
20140192318 | SENSOR SYSTEM FOR DETERMINING THE CONTROL SIGNALS ACTIVATING CILIARY MUSCLES - In a sensor system for determining the control signal supplied to the ciliary muscles of an eye for adjusting the focal length of the lens of an eye, a contact element of an electrically non-conductive material and provided with sensors is disposed on the cornea of the eye so that the sensors are arranged in contact with an annular area of the cornea next to the ciliary eye muscles so as to be able to sense the focal adjustment signals supplied to the ciliary muscles and the sensed adjustment signals are supplied to a signal processing unit which provides a control signal to a lens system with adjustable focal length for adjusting the focal length thereof depending on the focal adjustment signals of the ciliary eye muscles. | 07-10-2014 |
20140218681 | STATISTICAL AUTOREFRACTOR - Methods for determining a prescription (Rx) for a person include providing aberrometric data characterizing wavefront errors of the person's eye, the aberrometric data being obtained using an wavefront sensor and comprising one or more coefficients characterizing the wavefront errors; determining a starting Rx for the person's eye based on the one or more coefficients and on predetermined information relating aberrometric data and subjective refraction data for a plurality of people's eyes; and reporting the starting Rx to an eye care professional. | 08-07-2014 |
20140218682 | AUTOMATED VISION SCREENING APPARATUS AND METHOD - A system and method for screening vision including: requesting user information; performing objective visual acuity tests; and reporting visual acuity results without assistance from another person. | 08-07-2014 |
20140240665 | ELECTRONIC OPHTHALMIC LENS WITH REAR-FACING PUPIL DIAMETER SENSOR - A rear-facing pupil diameter sensing system for an ophthalmic lens comprising an electronic system is described herein. The rear-facing pupil diameter sensing system is part of an electronic system incorporated into the ophthalmic lens. The electronic system includes one or more batteries or other power sources, power management circuitry, one or more sensors, clock generation circuitry, control algorithms and circuitry, and lens driver circuitry. The rear-facing pupil diameter sensing system is utilized to determine pupil position and use this information to control various aspects of the ophthalmic lens. | 08-28-2014 |
20140268036 | METHODS FOR DIAGNOSING VITREO-RETINAL DISEASE - A quantitative method to analyze phase-resolved, raw backscatter echo data or the envelope of phase-resolved, raw backscatter echo data to characterize vitreous inhomogeneities as they relate to normal aging and vitreo-retinal disease. The technique can be applied to 2D or 3D data acquired from the vitreous. The approach provides an objective end value to characterize the vitreous and provide a tool for early diagnosis, monitoring and planning treatment of vitreo-retinal diseases. | 09-18-2014 |
20140268037 | INTELLIGENT HEADREST AND OPHTHALMIC EXAMINATION AND DATA MANAGEMENT SYSTEM - An automated ophthalmic diagnostic system includes a portable, hand-held ophthalmic instrument and a headrest detachably attachable to the ophthalmic instrument. The ophthalmic instrument has an RFID reader, a microprocessor, and a display. The headrest has a read/write RFID tag that stores patient identification information and sequential ophthalmic data and can transmit that information to the ophthalmic instrument through near-field communication. The microprocessor has a program that analyzes the sequential ophthalmic data and provides an output on the display, wherein a trend within the ophthalmic data is visually identifiable in the output. | 09-18-2014 |
20140293221 | OPHTHALMIC APPARATUS AND METHOD FOR MEASURING AN EYE - The ophthalmic apparatus is aligned to an eye to be examined. The apparatus is used to examine the eye. It has two or more infrared or near infrared light sources for emitting light beams and a detector sensitive to infrared or near-infrared light with the capability of detecting the light reflected from the examinee's face. It registers the examination result of the eye examined. The ophthalmic apparatus is aligned to an eye to be examined. The light beam of one infrared or near infrared light source is directed to the face. The light beam of another infrared or near infrared light source is directed to pass the examinee. The direction of the light reflected from the examinee's face is detected and the examination result and the examined eye are registered to know whether the examined eye was the right eye or the left eye | 10-02-2014 |
20140300860 | APPARATUS FOR OPTOMETRIC SELF-EXAMINATION, MANAGEMENT SERVER AND CONTACT LENS SELECTION SYSTEM - An object of the present invention is to provide an apparatus for optometric self-examination, a management server and a contact lens selection system using the same that are readily available to a new user and additionally shorten a time period required by an eye care practitioner for prescription or, even if no eye care practitioner's prescription is provided, allow for selection of a contact lens preferred for the user. The apparatus for optometric self-examination includes an optometric data acquisition unit for determining at least a part of a shape of a cornea of a user in response to an operation by the user and acquiring optometric data, based on the shape of the cornea, and a contact lens data display unit for displaying a result of selection of a contact lens suited for the optometric data, based on the optometric data and the shape data of contact lenses. | 10-09-2014 |
20140307225 | Device For Selecting Contact Lens Within A Cabinet Arranged To Receive A Plurality Of Contact Lens And Method Associated Thereof - The invention relates to a device for selecting contact lenses within a cabinet arranged to receive a plurality of contact lenses, the device including a storage data device for storing data based on measurements from an auto refractometer; and a data processor device associated with a calculation module for identifying a contact lens on the basis firstly of data from the auto refractometer as previously stored in the storage device, and secondly of additional data relating to the contact lens that is to be identified and that was previously input by the user, the data processor device associated with said calculation module also being arranged to identify the location of the lens within the cabinet. The invention also relates to an associated method. | 10-16-2014 |
20140333894 | Induced High Order Aberrations Corresponding to Geometrical Transformations - Wavefront measurements of eyes are typically taken when the pupil is in a first configuration in an evaluation context. The results can be represented by a set of basis function coefficients. Prescriptive treatments are often applied in a treatment context, which is different from the evaluation context. Hence, the patient pupil can be in a different, second configuration, during treatment. Systems and methods are provided for determining a transformed set of basis function coefficients, based on a difference between the first and second configurations, which can be used to establish the vision treatment. | 11-13-2014 |
20150036102 | SLOWING MYOPIA PROGRESSION AND/OR THE TREATMENT OR PREVENTION OF MYOPIA OR A DISEASE OR CONDITION ASSOCIATED WITH MYOPIA - The invention provides an ophthalmic lens comprising one or more oblique prismatic component, wherein the lens slows myopia progression and/or treats or prevents myopia or a disease or condition associated with myopia. The one or more oblique prismatic components may be base-down or base-down and base-in or base up and base-in. The one or more oblique prismatic components may be central and/or in a distance and/or near zone of the ophthalmic lens. The invention also provides an ophthalmic lens comprising a central base-down prism in a distance zone wherein the lens slows myopia progression and/or treats or prevents myopia or a disease or condition associated with myopia. Also provided is an optical device comprising one or more ophthalmic lenses and a method of slowing myopia progression and/or treating or preventing myopia or a disease or condition associated with myopia including using one or more ophthalmic lenses. | 02-05-2015 |
20150049305 | Large Diopter Range Real Time Sequential Wavefront Sensor - Example embodiments of a large dynamic range sequential wavefront sensor for vision correction or assessment procedures are disclosed. An example embodiment includes first and second optically coupled 4F relays and a variable focus lens disposed substantially at the image plane of the first 4F relay and the object plane of the second 4F relay. | 02-19-2015 |
20150055088 | OPHTHALMIC MEASUREMENT DEVICE, AND OPHTHALMIC MEASUREMENT SYSTEM EQUIPPED WITH OPHTHALMIC MEASUREMENT DEVICE - An ophthalmic measurement device to simulate a retinal image of an examinee's eye includes an ocular aberrometer for measuring an aberration of the eye and a calculation control unit for analyzing aberration data obtained by the ocular aberrometer on the naked eye. The calculation control unit calculates subjective correction data intended for a prescription based on a subjective value by obtaining the difference in each meridian direction between a refraction value in the aberration data and a new subjective value of the eye as obtained by a subjective optometry device, obtains a second polynomial equation wherein the coefficient that represents the refraction value among the coefficients of a first polynomial equation used for approximating the aberration data is replaced with a coefficient corresponding to the subjective correction data, back-calculates the aberration data by using the second polynomial equation, and generates a simulation image based on the back-calculated aberration data. | 02-26-2015 |
20150062529 | SYSTEMS AND METHODS FOR PROVIDING ASTIGMATISM CORRECTION - A method of selecting a toric lens by taking into consideration the magnitude and orientation of the posterior cornea and/or the location of the incision axis is described. The magnitude and orientation of the posterior cornea can be calculated as a function of the measured pre-operative orientation of the steep meridian of the anterior cornea. | 03-05-2015 |
20150085249 | NONINVASIVE MEASUREMENT OF CHEMICAL SUBSTANCES - Utilization of a contact device placed on the eye in order to detect physical and chemical parameters of the body as well as the non-invasive delivery of compounds according to these physical and chemical parameters, with signals being transmitted continuously as electromagnetic waves, radio waves, infrared and the like. One of the parameters to be detected includes non-invasive blood analysis utilizing chemical changes and chemical products that are found in the conjunctiva and in the tear film. A transensor mounted in the contact device laying on the cornea or the surface of the eye is capable of evaluating and measuring physical and chemical parameters in the eye including non-invasive blood analysis. The system utilizes eye lid motion and/or closure of the eye lid to activate a microminiature radio frequency sensitive transensor mounted in the contact device. The signal can be communicated by wires or radio telemetered to an externally placed receiver. The signal can then be processed, analyzed and stored. Several parameters can be detected including a complete non-invasive analysis of blood components, measurement of systemic and ocular blood flow, measurement of heart rate and respiratory rate, tracking operations, detection of ovulation, detection of radiation and drug effects, diagnosis of ocular and systemic disorders and the like. | 03-26-2015 |
20150092158 | DETERMINATION OF THE EFFECTIVE LENS POSITION OF AN INTRAOCULAR LENS USING APHAKIC REFRACTIVE POWER - An ophthalmic method for determining a relationship between aphakic ocular power and estimated effective lens position (ELP) of an intraocular lens (IOL) to be implanted in a patient's eye. The method can be used to determine an estimate of the ELP of an IOL given the aphakic ocular power of the patient's eye, for example, without measurement of the corneal curvature or axial length of the patient's eye. The estimate of ELP can then be used to determine a suitable value of optical power for the IOL to be implanted in the patient's eye. | 04-02-2015 |
20150103313 | Correction Values for IOL Power Estimates - An ophthalmic method for determining relationships for calculating intraocular lens (IOL) power correction values is disclosed. The method may involve obtaining estimates of the postoperative optical power of a plurality of eyes undergoing IOL implant surgery. Measurements of the postoperative optical power and of one or more characteristics (e.g., axial length) of the eyes can also be obtained. The eyes can be separated into groups based upon their axial lengths. For each of the groups, a mathematical relationship can be determined for calculating IOL power correction values based on the measured characteristics. The mathematical relationship can reduce prediction error for the respective eyes in each group when applied to the corresponding estimates of the postoperative optical power. Methods and systems are also disclosed for using the IOL power correction values. | 04-16-2015 |
20150109578 | DEVICE AND METHOD FOR DETERMINING AT LEAST ONE OBJECTIVE EYE REFRACTION PARAMETER OF A SUBJECT DEPENDING ON A PLURALITY OF GAZE DIRECTIONS - Device and method for determining an objective eye refraction parameter of a subject depending on a plurality of gaze directions, the device includes elements for ophthalmologically measuring an objective eye refraction parameter of a subject, and elements of visual stimulation of variable proximity and intended to stimulate the visual accommodation of the subject for first and second proximity values. The device includes opto-mechanical alignment elements for carrying out a first optical alignment of the optical axis of measurement on an eye axis in a first measuring position corresponding to a first angle of lowered viewing associated with a first proximity value to take a first measurement of an objective eye refraction parameter of the subject, and a second alignment of the optical axis of measurement on the eye axis in another measuring position corresponding to another angle of lowered viewing associated with another proximity value to take a second measurement. | 04-23-2015 |
20150289760 | Large Diopter Range Real Time Sequential Wavefront Sensor - Example embodiments of a large dynamic range sequential wavefront sensor for vision correction or assessment procedures are disclosed. An example embodiment includes first and second optically coupled 4F relays and a variable focus lens disposed substantially at the image plane of the first 4F relay and the object plane of the second 4F relay. | 10-15-2015 |
20150290032 | MANIFEST REFRACTION TREATMENT SYSTEMS AND METHODS - Embodiments of the present invention encompass systems and techniques for developing a vision prescription for a patient based on an objective optical manifest refraction, such as that measured with a wavefront device, without altering the prescription in response to any subjective manifest refraction, such as that measured with a phoropter device. | 10-15-2015 |
20150320310 | OPTIMIZING VISION CORRECTION PROCEDURES - In one embodiment, a wavefront sensor is combined with a slit lamp eye examination device so that real time aberration values of an eye being examined can be viewed during a slit lamp eye examination session. | 11-12-2015 |
20150342459 | OPHTHALMOLOGIC APPARATUS - An ophthalmologic apparatus includes a refractive power application unit, a storage unit, and a control unit. The refractive power application unit is configured to be capable of changing refractive power applied to a subject's eye. The storage unit stores at least a measurement value of eye refractive power obtained by a measurement performed for the subject's eye in the past. The control unit controls the refractive power application unit to selectively apply the measurement value and one or more refractive values different from the measurement value to the subject's eye in response to the input of an instruction to change refractive power applied to the subject's eye. | 12-03-2015 |
20150351626 | METHOD FOR RAPID CALCULATION OF TEAR FILM LIPID AND AQUEOUS LAYER THICKNESS AND OCULAR SURFACE REFRACTIVE INDEX FROM INTERFEROMETRY SPECTRA - A method for determining optical properties of a corneal region. The method includes the steps of obtaining a combined tear film aqueous layer plus lipid layer thickness; obtaining a tear film lipid layer thickness; subtracting the tear film lipid layer thickness from the combined tear film aqueous layer plus lipid layer thickness to obtain a tear film aqueous layer thickness; and determining a corneal layer refractive index based on the tear film lipid layer thickness and the tear film aqueous layer thickness. | 12-10-2015 |
20150351627 | FAST ABSOLUTE-REFLECTANCE METHOD FOR THE DETERMINATION OF TEAR FILM LIPID LAYER THICKNESS - A method of determining tear film lipid layer thickness. The method includes the steps of measuring a tear film aqueous plus lipid layer relative reflectance spectrum using a wavelength-dependent optical interferometer; converting the measured tear film aqueous plus lipid layer relative reflectance spectrum to a calculated absolute reflectance spectrum; and comparing the calculated absolute reflectance spectrum to a theoretical absolute lipid reflectance spectrum to determine a tear film lipid layer thickness. | 12-10-2015 |
20150351628 | FAST ABSOLUTE-REFLECTANCE METHOD FOR THE DETERMINATION OF TEAR FILM LIPID LAYER THICKNESS - A method for determining reflectivity of a tear film lipid layer of a patient and recommending a course of treatment based on the same. The method includes the steps of: measuring a tear film aqueous plus lipid layer relative reflectance spectrum using a wavelength-dependent optical interferometer; converting the measured tear film aqueous plus lipid layer relative reflectance spectrum to a calculated absolute reflectance spectrum; comparing the calculated absolute reflectance spectrum to a theoretical absolute lipid reflectance spectrum to determine a tear film lipid layer thickness; and determining a reflectivity value for the tear film lipid layer thickness at a first wavelength of light corresponding to ultraviolet, violet, or blue light. | 12-10-2015 |
20160004069 | VARIABLE SHAPE MIRROR, OPHTHALMOLOGICAL APPARATUS, ADAPTIVE OPTICAL SYSTEM AND METHOD OF MANUFACTURING VARIABLE SHAPE MIRROR - Provided is a technology that realizes a variable shape mirror using an actuator having a comb electrode structure, which can be relatively easily manufactured and displaced in two (±) directions perpendicular to a mirror reference plane. A variable shape mirror ( | 01-07-2016 |
20160007846 | METHOD FOR DETERMINING THE POWER OF AN INTRAOCULAR LENS | 01-14-2016 |
20160015262 | METHOD AND SYSTEM FOR IMPROVING VISION OF AN EYE WITH MACULAR DEGENERATION - Methods and apparatus are disclosed for diagnosing vision and improving vision, for example by reducing or eliminating the effects of macular degeneration, in a manner which does not interfere with the natural shape of the cornea or its orientation relative to the remainder of the eye, but which changes its surface curvature appropriately to achieve the required correction of vision. The focus of sub-regions of the cornea is adjusted so that different regions focus at a controlled distance about a reference axis. This can be accomplished by shaping the cornea (e.g. through ablation) or by applying an appropriate contact lens or other optical lens. | 01-21-2016 |
20160038022 | INTEGRATED SURGICAL MICROSCOPE AND WAVEFRONT SENSOR - A wavefront sensor is integrated with a surgical microscope for allowing a doctor to make repeated wavefront measurements of a patient's eye while the patient remains on an operating table in the surgical position. The device includes a wavefront sensor optically aligned with a surgical microscope such that their fields of view at least partially overlap. The inclusion of lightweight, compact diffractive optical components in the wavefront sensor allows the integrated device to be supported on a balancing mechanism above a patient's head during a surgical procedure. As a result, the need to reposition the device and/or the patient between measuring optical properties of the eye and performing surgical procedures on the eye is eliminated. Many surgical procedures may be improved or enhanced using the integrated device, including but not limited to cataract surgery, Conductive Keratoplasty, Lasik surgery, and corneal corrective surgery. | 02-11-2016 |
20160045107 | METHOD AND SYSTEM FOR DETERMINING THE REFRACTIVE PROPERTIES OF AN EYE OF A CHILD - The invention is directed to a system for determining the refractive properties of an eye. The system includes a wavefront measurement device for measuring the refractive properties of the eye. The system is configured to have at least one measurement mode assigned to children, wherein the system has an input device configured to switch the system into one of the at least one measurement mode assigned to children. The system is further configured to alter at least one of a group including a default pupillary distance, a default cornea vertex distance, a default position of the wavefront measurement device, a default position and/or direction of a measurement ray of the wavefront measurement device, a default position of a forehead and chin rest assembly of the system and a fixation target when the system is switched into the one of the at least one measurement mode assigned to children. | 02-18-2016 |
20160058282 | DEVICE FOR SELECTING CONTACT LENS WITHIN A FURNITURE ARRANGED TO RECEIVE A PLURALITY OF CONTACT LENS AND METHOD ASSOCIATED THEREOF - The invention relates to a device for selecting contact lenses within a cabinet arranged to receive a plurality of contact lenses, the device including a storage data device for storing data based on measurements from an auto refractometer; and a data processor device associated with a calculation module for identifying a contact lens on the basis firstly of data from the auto refractometer as previously stored in the storage device, and secondly of additional data relating to the contact lens that is to be identified and that was previously input by the user, the data processor device associated with said calculation module also being arranged to identify the location of the lens within the cabinet. The invention also relates to an associated method. | 03-03-2016 |
20160081543 | Photorefraction Ocular Screening Device and Methods - A photorefraction ocular screening device for assessing vision and corresponding disorders associated with the human ocular system is provided. More specifically, the present invention provides for a photorefraction ocular screening device employing advanced methods of pupil detection and refractive error analysis. The photorefraction ocular screening device is comprised of an LED arrangement configured with a plurality of irradiation sources serving as visual stimuli, wherein the visual stimuli may be presented in varying illumination patterns to the pupils of an examinee for expanding the range of ocular responses that can be used to determine refractive error. | 03-24-2016 |
20160095512 | METHOD OF EVALUATING QUALITY OF VISION IN EXAMINEE'S EYE AND STORAGE MEDIUM - An ophthalmic apparatus obtains naked-eye wavefront aberration data of an examinee's eye measured by an aberration measuring unit, and calculates first corrected wavefront aberration data intended for a prescription with a first correction power based on the naked-eye wavefront aberration data and the first correction power and generates a first evaluation index based on the first corrected wavefront aberration data. The ophthalmic apparatus further calculates second corrected wavefront aberration data intended for a prescription with a second correction power different from the first correction power in at least one of spherical power, astigmatic power, and astigmatic axis angle based on the naked-eye wavefront aberration data and the second correction power, and generates a second evaluation index based on the second corrected wavefront aberration data. The ophthalmic apparatus then displays the first and second evaluation indexes selectively or in parallel on a monitor. | 04-07-2016 |
20160100806 | METHODS, SYSTEMS, AND COMPUTER READABLE MEDIA FOR PREDICTING EARLY ONSET GLAUCOMA - Methods, systems, and computer readable media for predicting early onset glaucoma via structural parameters obtained via time and spectral-domain optical coherence tomography (SD-OCT) are disclosed. SD-OCT technology measures the thicknesses of the layers of the retina that contain the cells that die in glaucoma before there is any functional loss. A multivariable predictive model may be used for the diagnosis of early glaucoma using a combination of optic nerve head (ONH), peripapillary retinal nerve fiber layer (RNFL), and macular ganglion cell-inner plexiform layer (GCIPL) parameters measured via SD-OCT. The model generates a glaucoma probability score for individual patient, which is valuable information in assisting clinicians in glaucoma diagnosis and treatment. | 04-14-2016 |
20160124245 | CUSTOMIZED LENS DEVICE AND METHOD - A system and method for identifying a custom contact lens for a patient. The method includes receiving as input results from a bare eye examination of a patient including at least a measured sphere power; receiving as input a target or actual measured sphere power of a selected fitting lens; receiving as input results of an over-refraction examination of a patient wearing the fitting lens, wherein the results of the over-refraction examination include at least a measured sphere power; calculating the power delivered by the fitting lens on the patient's eye based on input received from the bare eye examination and over-refraction examinations; calculating an Effectiveness Ratio using the calculated power delivered by the fitting lens and the target or actual measured sphere power of the fitting lens; and calculating a custom lens power for the patient using the Effectiveness Ratio and measured sphere power from the bare eye examination. | 05-05-2016 |
20160128558 | OPTICAL COHERENCE ELASTOGRAPHY TO ASSESS BIOMECHANICS AND DETECT PROGRESSION OF OCULAR AND OTHER TISSUES DEGENERATIVE DISEASES - An excitation force (internal or external) and phase-sensitive optical coherence elastography (OCE) system, used in conjunction with a data analyzing algorithm, is capable of measuring and quantifying biomechanical parameters of tissues in situ and in vivo. The method was approbated and demonstrated on an example of the system that combines a pulsed ultrasound system capable of producing an acoustic radiation force on the crystalline lens surface and a phase-sensitive optical coherence tomography (OCT) system for measuring the lens displacement caused by the acoustic radiation force. The method allows noninvasive and nondestructive quantification of tissue mechanical properties. The noninvasive measurement method also utilizes phase-stabilized swept source optical coherence elastography (PhS-SSOCE) to distinguish between tissue stiffness, such as that attributable to disease, and effects on measured stiffness that result from external factors, such as pressure applied to the tissue. Preferably, the method is used to detect tissue stiffness and to evaluate the presence of its stiffness even if it is affected by other factors such as intraocular pressure (IOP) in the case of cornea, sclera, or the lens. This noninvasive method can evaluate the biomechanical properties of the tissues in vivo for detecting the onset and progression of degenerative or other diseases (such as keratoconus). | 05-12-2016 |
20160128562 | Apparatus and Method of Determining an Eye Prescription - Eye prescriptions may be determined by providing a simple, easy to use, portable device with a specially configured targeting light source that aligns the eye, mitigates accommodation, and provides accurate results. Unlike stationary, closed view autorefractors, this device typically is portable, self-usable, relatively inexpensive, enabling more widespread use across the world. | 05-12-2016 |
20160128563 | WAVEFRONT INTERACTIVE REFRACTION DISPLAY - Embodiments of this invention generally relate to systems and methods for wavefront interactive refraction display and more particularly to systems and methods for capturing and displaying eye wavefront interactive refraction data based on the desired refractive state of the patient's eye. | 05-12-2016 |
20160135676 | ACCOMMODATION COMPENSATION SYSTEMS AND METHODS - Methods and systems for obtaining an ocular aberration measurement of an eye of a patient are provided. Exemplary techniques involve obtaining a first induced metric for the eye that corresponds to a first accommodation state of the eye, obtaining a second induced metric for the eye that corresponds to a second accommodation state of the eye, and determining a natural metric of the eye based on the first and second induced metrics. An induced metric may include a pupil size or a spherical aberration. Techniques can also include determining a target metric for the eye base on the natural metric, determining whether an actual metric of the eye meets the target metric, obtaining an ocular aberration measurement of the eye if the actual metric meets the target metric, and determining a treatment for the eye based on the ocular aberration measurement. | 05-19-2016 |
20160139433 | IMAGING APPARATUS AND IMAGING METHOD - An imaging apparatus includes: an imaging lens module, having an adjustable imaging parameter, and used to image an observed object of an imaging receiver; an information processing module, used to detect a focus position of the imaging receiver, and determine the imaging parameter of the imaging lens module according to the focus position; and a lens adjustment module, used to adjust the imaging lens module according to the determined imaging parameter. Through the apparatus and method of the embodiments of the present invention, a focus position of an imaging receiver is automatically detected and an imaging parameter of an imaging lens module located between the imaging receiver and an object is automatically adjusted according to the focus position, thereby enabling an imaging receiver (for example, a user's eyes) to conveniently obtain clear imaging of objects at different distances. | 05-19-2016 |
20160150952 | METHOD AND SYSTEM FOR EYE MEASUREMENTS AND CATARACT SURGERY PLANNING USING VECTOR FUNCTION DERIVED FROM PRIOR SURGERIES | 06-02-2016 |
20160183784 | Pupilary Screening System and Method - A method of screening a pupil of a subject to determine whether the pupil reflex resembles a canonical pupil reflex is disclosed. The method comprises the steps of stimulating the pupil with a stimulus source, such as a pupilometer and determining whether one of various pupillary response conditions is met. | 06-30-2016 |
20160183786 | METHODS AND APPARATUS FOR RETINA BLOOD VESSEL ASSESSMENT WITH OCT ANGIOGRAPHY - A method of processing a 3D OCT dataset is present. A method according to some embodiments of the present invention includes obtaining an OCT data from the 3D OCT dataset; obtaining an OCTA data from the 3D OCT dataset; performing segmentation for at least one boundary on the OCT data; processing the OCTA data in a region of interest to create at least one image representation by assigning a value to each pixel of each of the image representation; and displaying at least one image representation. | 06-30-2016 |
20160198941 | METHOD FOR ASSISTING VISUAL EXPLORATION FOR AN INDIVIDUAL SUFFERING FROM A RETINAL CONDITION RESULTING IN A SCOTOMA | 07-14-2016 |