| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 351239000 | Including test chart or target | 84 |
| 20080309880 | Vision Testing System and Method - A method for testing a person's vision is disclosed. The method includes providing, for display to the person, one or more sequences of test images, each test image including one or more test symbols. For each test image, a target symbol is identified to the person. The person then views each test image in the sequence and activates a control in response to recognising a test symbol that replicates the shape of the target symbol. At the completion of the sequence, a parameter value associated with the activations is processed and correlated with a vision metric. A system for testing a person's vision is also disclosed. | 12-18-2008 |
| 20090153803 | Device and method for vision test - A device for vision testing comprises a viewing position ( | 06-18-2009 |
| 20090168020 | Vision Testing with Rendered Digital Imagery Modification Under Viewer Control - Tools and techniques for vision testing alter refractive characteristics of rendered digital imagery and use feedback from a test subject to calculate information about errors in the subject's vision. Some embodiments produce a rendered digital image with vision-realistic rendering, present the test subject with the rendered digital image, accept input from the test subject and change the refractive sharpness of the rendered digital image in response to the input. Then they calculate refractive errors or other information about the test subject's vision based at least on: input from the test subject leading to a refractive sharpness change made during the changing step, and a refraction model which relates visual acuity to changes in the refractive sharpness of rendered digital imagery. | 07-02-2009 |
| 20090185137 | System and method for measuring fixation disparity and proprioceptive misalignment of the visual system - In accordance with the invention there is disclosed a method for determining the amount of prism needed to be placed in spectacle lenses to correct ones fixation disparity and or proprioceptive misalignment, wherein target objects viewed by each eye will be perceived to be at optical infinity and the objects to be viewed by each eye are seen separately but also simultaneously, the method comprising: adding Base Out prism in a smooth and continuous manner until the target objects jump together, switch sides or are suppressed; decreasing Base Out prism and thereafter continuing to add Base In prism until the target objects return to their original position; and recording amount of prism needed to achieve the target objects returning to their original position. | 07-23-2009 |
| 20100118272 | AMPLITUDE OF ACCOMMODATION MEASURING APPARATUS - Shift lenses | 05-13-2010 |
| 20100177281 | EYE DISORDER DETECTION CHART - An eye chart comprises a series of sinusoidal lines spaced at intervals of a selected to discriminate between normal vision and vision impaired by the presence of a cataract. Groups of sinusoidal lines have progressively different distances between the series with one series representing normal vision with the space between the lines growing progressively further apart to indicate the advancement of the cataract. A user counts the number of lines of the group that is clearly distinct. A user with normal vision will be able to count the number of lines, while a person with cataracts will require the space between the lines to be further apart in order to count depending on the stage of cataract development. A light source may be used to indicate night vision problems. A practitioner can record the progression of cataracts by keeping track of any changes over time. | 07-15-2010 |
| 20100201948 | APPARATUS FOR DETECTING RETINAL NEUROPATHY - Screening apparatus includes a display for presenting a target to a participant; means for locating the participant's eye a predetermined distance from the display; means for animating the target so as to vary the speed of the target discontinuously; and evaluation means for determining the participant's ability to perceive the change in the target's speed. | 08-12-2010 |
| 20100253914 | System and method for detecting central retinal distortions associated with macular diseases - Provided herein are methods and systems to screen for subjects at risk for retinal-associated eye diseases or to monitor the progression/regression thereof. Generally, the method comprises simultaneously or sequentially displaying to a potentially at-risk individual targets of parallel and nonparallel lines, obtaining an orientation discrimination threshold based on the subject's selections and correlating an increase in the threshold compared to that of a normal control or to a previous threshold measured for the subject as indicative of risk for a retinal-associated eye disease or a progression of the eye disease. Also provided are program storage devices and computer program products effective to store instructions or source code to perform the methods. | 10-07-2010 |
| 20100283973 | APPARATUS AND METHOD FOR SCREENING FOR GLAUCOMA USING VISUALLY EVOKED POTENTIALS - A pattern VEP system for screening for glaucoma and other optic nerve related diseases/deficiencies. The system combines high contrast and low contrast testing. The low contrast testing allows for highly sensitive glaucoma testing and the high contrast allows for a sensitive test of the central vision. The system also includes a narrowly tailored method of rejecting corrupted data allowing the system to selectively salvage useful portions of a signal. The system also provides a method of data modeling to locate the N75-P100-N135 complex in a waveform and determine if it falls within the normal range | 11-11-2010 |
| 20110007276 | Method and Apparatus for the Detection of Impaired Dark Adaptation - The present method describes a new method for the measurement of dark adaptation. The dark adaptation status of subjects may then be used to identify those subjects who are at risk of developing and/or who are currently suffering from a variety of disease states having their clinical manifestations in impaired dark adaptation. The disease states include, but are not limited to, age related macular degeneration, vitamin A deficiency, Sorsby's Fundus Dystrophy, late autosomal dominant retinal degeneration, retinal impairment related to diabetes and diabetic retinopathy. An apparatus for administering the test method described is also provided. | 01-13-2011 |
| 20110013142 | CATARACT DETECTION EYE CHART - An eye chart uses a series of sinusoidal lines spaced at intervals selected to discriminate between normal vision and vision impaired by the presence of a cataract. Groups of sinusoidal lines have progressively different distances between the series with one series representing normal vision with the space between the lines growing progressively further apart to indicate the advancement of the cataract. A user counts the number of lines of the group that is clearly distinct. A user with normal vision will be able to count the number of lines, while a person with cataracts will require the space between the lines to be further apart in order to count depending on the stage of cataract development. A light source may be used to indicate night vision problems. A user can record the progression of the cataracts by tracking any changes over time. Different shapes and letters may be used. | 01-20-2011 |
| 20110037950 | Animated image vision test - Animated image vision tests take advantage of the ability of our eyes to detect both distance and motion. Moving images, such as rotating segmented circles, let the eyes detect motion as to the size, distance, and rotation direction of that moving image. That motion detection is much more precise than the interpretation of multiple static letters or static images. Using rotating images for vision testing rather than static images creates an acuity test more accurate than current tests, a test that is faster to use, and a test that doesn't require the ability to read. | 02-17-2011 |
| 20110063571 | METHOD AND SYSTEM FOR QUANTITATIVE ASSESSMENT OF VISUAL CONTRAST SENSITIVITY - A method is presented to address quantitative assessment of visual contrast sensitivity in a subject, where the method comprises the steps of: ( | 03-17-2011 |
| 20110085140 | APPARATUS AND METHODS FOR TESTING CONTRAST SENSITIVITY - A test for measuring the contrast sensitivity of a patient uses a set of card that each include a stimulus, such as a square wave grating, presented at a single low-spatial frequency. The gratings vary in contrast from card to card. The test allows for the determination of the maximum contrast sensitivity of the patient in a single measurement, without knowing the spatial frequency at which that maximum occurs, which is possible because the spatial frequency is low enough that it is most likely below the maximum of the contrast sensitivity function in patients of any age. | 04-14-2011 |
| 20110116047 | SYSTEM AND METHOD FOR VISION EVALUATION - A method for vision evaluation including displaying a sequence of frames on a display screen of a display device. Each frame may contain one or more symbols. The method may also include changing one or more viewing parameters between frames of said sequence of frames as the displaying of the sequence of frames progresses. The viewing parameters may be selected from the group of viewing parameters consisting of spatial and temporal parameters. The method may also include calculating a vision evaluation score for the subject whose response to the displayed sequence of frames is received through an input interface device. A system for vision evaluation is also disclosed. | 05-19-2011 |
| 20110141437 | Method and Apparatus for the Detection of Impaired Dark Adaptation - The present method describes a new method for the measurement of dark adaptation. The dark adaptation status of subjects may then be used to identify those subjects who are at risk of developing and/or who are currently suffering from a variety of disease states having their clinical manifestations in impaired dark adaptation. The disease states include, but are not limited to, age related macular degeneration, vitamin A deficiency, Sorsby's Fundus Dystrophy, late autosomal dominant retinal degeneration, retinal impairment related to diabetes and diabetic retinopathy. An apparatus for administering the test method described is also provided. | 06-16-2011 |
| 20110187996 | EYE EXAMINATION APPARATUS, METHOD FOR MANUFACTURING SPECTACLE LENS, SPECTACLE LENS, METHOD FOR MANUFACTURING MULTIFOCAL EYEGLASSES, AND MULTIFOCAL EYEGLASSES - An eye examination apparatus includes an accommodation power acquisition unit, a corrected accommodation power calculation unit, a drive unit and an accommodative microfluctuation measurement unit. The accommodation power acquisition unit acquires an accommodation power which is determined from a difference between a near point and a distant point of an examined eye. The corrected accommodation power calculation unit calculates an integrated value of the accommodation power and a correction coefficient. The drive unit drives a vision target in a direction of an optical axis of the examined eye. The accommodative microfluctuation measurement unit controls the drive unit to cause the vision target to be arranged onto a corrected accommodation position corresponding to the integrated value, such that the accommodative microfluctuation measurement unit measures an eye accommodation function based on a frequency of appearance of a high frequency component representative of ciliary body accommodative microfluctuation. | 08-04-2011 |
| 20110211163 | ADAPTIVE VISUAL PERFORMANCE TESTING SYSTEM - A method of testing visual performance includes determining a difficulty rating for each of a plurality of visual recognition tests. The method further includes displaying one of the visual recognition tests to a subject and receiving from the subject a response to the visual recognition test. After receiving the response to the visual recognition test, a subsequent visual recognition test is selected to have a difficulty rating determined based on the response received from the subject, the subsequent visual recognition test is displayed, and a response is received from the subject. The subsequent visual recognition tests are repeated until a predetermined number of responses is reached. A visual performance score is determined based on the set of responses received from the subject and the difficulty ratings for the visual recognition tests displayed to the subject is then output. | 09-01-2011 |
| 20110255055 | CONTRAST SENSITIVITY TEST - Methods and apparatus are provided for measuring contrast sensitivity. In one method, a person is presented with a test pattern having several test areas. In a first test cycle, one of the test areas contrasts with (for example, is darker than) the other test areas. The person being tested indicates which test area the person perceives as contrasting with (darker than) the other test areas. This is repeated a number of times for the other test areas, with the level of contrast staying the same but with a different test area becoming the contrasting (darker) test area. In subsequent cycles, these steps are repeated, with decreasing levels of contrast. The contrasting test area may, for example, appear as a solid, as a pattern such as two contrasting vertical bars, or as an animation such as a sinusoidal frequency grating. | 10-20-2011 |
| 20110255056 | ASTIGMATIC AXIS INDEPENDENT SPATIAL FREQUENCY AND CONTRAST SENSITIVITY TARGET AND METHOD - A set of visual targets and a method for using these targets to evaluate the spatial frequency response and contrast sensitivity of the human visual system. The invention includes four choice test, six choice test, sinusoidal bulls eye and fundamental sinusoidal letters or optotype targets. The four and six choice targets feature sinusoidal gratings oriented vertically, horizontally and at angles thereto. The sinusoidal bull's eye target features concentric circular light and dark areas with brightness varying in a radial sinusoidal fashion. The fundamental sinusoidal optotype target features an optotype, such as a letter, that is made up of strokes, each of which have a width that is equal to ½ of a single sinusoidal period. | 10-20-2011 |
| 20110292345 | DEVICE AND A METHOD FOR MEASURING A CHARACTERISTIC READING DISTANCE OF AN INDIVIDUAL IN A NEAR VISION NATURAL POSTURE - A measurement device ( | 12-01-2011 |
| 20120033182 | 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. | 02-09-2012 |
| 20120075586 | METHODS AND SYSTEMS FOR INTELLIGENT VISUAL FUNCTION ASSESSMENTS - A system and method of testing vision performance includes displaying a visual recognition test to a subject and receiving from the subject a response to the visual recognition test. After receiving the response to the visual recognition test, a subsequent visual recognition test is selected based on the response received from the subject, the subsequent visual recognition test is displayed, and a response is received from the subject. The subsequent visual recognition tests are repeated until a predetermined criterion is reached. A vision performance score is determined based on the visual recognition tests displayed and the set of responses received from the subject and output from the system. | 03-29-2012 |
| 20120120370 | EFFECTIVE ACUITY AND REFRACTION TARGETS - A viewing target for a visual acuity and refraction measurement includes at least one line comprising a width dimension that is below a resolution limit width (hereinafter “RLW”) of a test subject visual acuity, and an adjustable length dimension that is initially set at greater than the RLW of the test subject visual acuity. A base, at least approximately intersecting the line, has a thickness along the direction of the length of the line that is greater than the RLW of the test subject visual acuity. The length dimension of the line is adjustable in increments small enough to effectively approximate the visual acuity of the test subject by determining a shortest resolvable line and a next smaller line that is not resolvable by the test subject. | 05-17-2012 |
| 20120169997 | MEASUREMENT DEVICE AND MEASUREMENT METHOD FOR FLICKERING PERCEPTION THRESHOLD - The measurement method involves a step for displaying on a display screen an image in which one corresponding region exclusively that has been selected from regions provided has a contrast difference when on and when off; a step for enlarging the contrast difference in the image display in cases which an operation for an operation unit accompanying the flickering perception of a subject is assessed to not be correctly specifying the one aforementioned selected region, and, in cases which a correct specification has been assessed, recording the contrast difference at that point in a recording unit as the measurement contrast difference; and a step for assessing whether the aforementioned recorded measurement contrast difference has converged, reducing the contrast difference when convergence has not been assessed, and determining the convergence value of the aforementioned measurement contrast difference as information corresponding to the flickering perception threshold when convergence has been assessed. | 07-05-2012 |
| 20120327369 | ANIMATED IMAGE VISION TEST - A system and associated methods for animated image vision testing is disclosed. In at least one embodiment, a vision test includes at least one animated dynamic optotype image for measuring the visual acuity of a subject. The animated image vision test takes advantage of the ability of the human eyes to detect both distance and motion. Moving images, such as rotating segmented circles, let the eyes detect motion as to the size, distance, and rotation direction of that moving image. That motion detection is much more precise than the interpretation of multiple static letters or static images. Using rotating images for vision testing rather than static images creates an acuity test more accurate than current tests, a test that is faster to use, and a test that does not require the ability to read. | 12-27-2012 |
| 20130027668 | Near Eye Tool for Refractive Assessment - In exemplary implementations, this invention is a tool for subjective assessment of the visual acuity of a human eye. A microlens or pinhole array is placed over a high-resolution display. The eye is brought very near to the device. Patterns are displayed on the screen under some of the lenslets or pinholes. Using interactive software, a user causes the patterns that the eye sees to appear to be aligned. The software allows the user to move the apparent position of the patterns. This apparent motion is achieved by pre-warping the position and angle of the ray-bundles exiting the lenslet display. As the user aligns the apparent position of the patterns, the amount of pre-warping varies. The amount of pre-warping required in order for the user to see what appears to be a single, aligned pattern indicates the lens aberration of the eye. | 01-31-2013 |
| 20130128229 | VIDEO GAME TO MONITOR RETINAL DISEASES - Systems and methods for providing a video game to map macular visual acuity comprising a multiple choice test where the fixation point is ensured by brief simultaneous presentation of both a central and pericentral targets. The game may be implemented on a hardware platform including a video display, a user input device, and a video camera. The camera is used to monitor ambient light level and the distance between the device and the eyes of the test subject. The game serves as a macular acuity perimeter that produces a map of the acuity of an eye that may be compared with normative data. The type of acuity tested is preferably Vernier acuity, but resolution acuity can also be tested. The test results are transmitted to a health care professional by telecommunications means to facilitate the diagnosis or monitoring of age-related macular degeneration or other relevant eye diseases. | 05-23-2013 |
| 20130176537 | REFRACTOMETER WITH A REMOTE WAVEFRONT GENERATOR - A vision testing method and apparatus are disclosed, the method including generating an image, modulating the wavefront of the image remote from the patient, relaying the modulated wavefront to a plane nearby, on, or within the patient's eye, varying the modulation of the wavefront based upon patient or operator response, and conveying the value of the wavefront modulation to the operator. The apparatus includes devices for generating an image, modulating the wavefront of the image that is physically remote from the patient, optically relaying the modulated wavefront of the image to a plane nearby, on, or within a patient's eye, varying the modulation of the wavefront of the image based upon patient or operator response, and conveying the value of the continuously modulated wavefront to the operator. | 07-11-2013 |
| 20130201453 | PEDIATRIC VISION TEST - Disclosed are a method and kit for testing visual acuity in a subject. The examiner displays a test thread at a set distance in front of the subject's face, and then determines whether the subject grabs or looks at the test thread. These steps are repeated using subsequent threads of varying thickness. The smallest thread to which the subject responds is charted as their best VA in standard notation. The visual acuity of a young child can be quantified using standard adult Snellen acuity levels. The device can be used worldwide, as it transcends language barriers, and in a variety of practice settings, including pediatric ophthalmologist offices, general ophthalmologist offices, optometric offices, pediatricians and family doctors who see young children or persons unable to read a conventional Snellen chart and/or verbalize their responses. | 08-08-2013 |
| 20130301007 | APPARATUS TO MEASURE ACCOMMODATION OF THE EYE - A device for measuring a user's range of clear focus (accommodation) comprising: a display for displaying a test image to the user at a first size; a sensor for determining the separation between the display and the user; and a processor for determining the angular subtence of the image to the user and to resize the test image in order to substantially maintain the angular subtence of the image when the separation between the display and the user is varied. | 11-14-2013 |
| 20130314669 | METHOD AND SYSTEM FOR ASSESSING VISUAL DISORDER - A method of diagnosis is disclosed. The method comprises using a display device for presenting a motion perception test to a subject and determining a subject response to the motion perception test. The response can be used for assessing presence or absence of demyelination and/or remyelination. | 11-28-2013 |
| 20130335707 | ADAPTIVE VISUAL PERFORMANCE TESTING SYSTEM - A method of testing visual performance includes determining a difficulty rating for each of a plurality of visual recognition tests. The method further includes displaying one of the visual recognition tests to a subject and receiving from the subject a response to the visual recognition test. After receiving the response to the visual recognition test, a subsequent visual recognition test is selected to have a difficulty rating determined based on the response received from the subject, the subsequent visual recognition test is displayed, and a response is received from the subject. The subsequent visual recognition tests are repeated until a predetermined number of responses is reached. A visual performance score is determined based on the set of responses received from the subject and the difficulty ratings for the visual recognition tests displayed to the subject is then output. | 12-19-2013 |
| 20140160436 | SYSTEM AND METHOD FOR EVALUATING INTRAOCULAR LENS PERFORMANCE - Systems and methods for providing improved techniques for evaluating performance of intraocular lenses. Such techniques can be used to evaluate lens designs and can help reduce the need for multiple clinical trials that may otherwise be needed to evaluate multiple design iterations. In one embodiment, a method is provided for method for evaluating performance of an intraocular lens, where the method comprises capturing a plurality of images through the intraocular lens at different focus positions; displaying at least one selected image from the plurality of images to a test subject; receiving input from the test subject indicative of perceived acuity of the at least one selected image; and determining a measure of intraocular lens performance from the received input. | 06-12-2014 |
| 20140168607 | EYEGLASSES-WEARING SIMULATION METHOD, PROGRAM, DEVICE, EYEGLASS LENS-ORDERING SYSTEM AND EYEGLASS LENS MANUFACTURING METHOD - An eyeglasses-wearing simulation method comprising: a step of creating a pair of left and right original images for enabling a patient to perform stereoscopic viewing by utilizing binocular parallax, based on virtual scene data constituted by virtual objects placed in visual field spaces of the left and right eyes; a step of calculating distortion and blur of a right eye eyeglass lens and adding the distortion and blur to the right eye original image, and calculating distortion and blur of a left eye eyeglass lens and adding the distortion and blur to the left eye original image; and a step of stereoscopically displaying the processed images viewed through the pair of left and right eyeglass lenses on a screen, wherein a value of the blur is calculated by setting a same amount of accommodation to the left and right eyes in regard to all of object points. | 06-19-2014 |
| 20140211166 | DEVICE FOR DETERMINING A GROUP OF VISION AIDS SUITABLE FOR A PERSON | 07-31-2014 |
| 20140340644 | DISPLAY ACCESSIBILITY FOR COLOR VISION IMPAIRMENT - Examples that increase accessibility of color vision impaired users to information on a display are provided herein. A plurality of graphical elements using a first color palette are presented. A user input indicating that the user has a color vision impairment is received. The color vision impairment can be, for example, deuteranopia, protanopia, or tritanopia. At least some of the plurality of graphical elements can be presented using a second color palette designed for users with the color vision impairment. The user input indicating that the user has a color vision impairment can be received in response to presenting a color vision impairment test to the user. | 11-20-2014 |
| 20140340645 | EFFECTIVE ACUITY AND REFRACTION TARGETS - A viewing target for a visual acuity and refraction measurement includes at least one line comprising a width dimension that is below a resolution limit width (hereinafter “RLW”) of a test subject visual acuity, and an adjustable length dimension that is initially set at greater than the RLW of the test subject visual acuity. A base, at least approximately intersecting the line, has a thickness along the direction of the length of the line that is greater than the RLW of the test subject visual acuity. The length dimension of the line is adjustable in increments small enough to effectively approximate the visual acuity of the test subject by determining a shortest resolvable line and a next smaller line that is not resolvable by the test subject. | 11-20-2014 |
| 20140340646 | Self Guided Subjective Refraction Instruments and Methods - A refraction device determines a refraction end point to provide corrective optics for a test subject. The device includes an adjustable optical system providing corrective optics to the test subject and an adjustable viewing target disposed along an optical path such as to be viewable through the adjustable optical system by a test subject. The adjustable viewing target includes a directional indicator linked synchronously to at least two choices of corrective optics presented to the test subject. | 11-20-2014 |
| 20150022782 | BINARY CHOICE SELF-TESTING - My invention is an automated self-testing method utilizing binary choice, which is applicable to monocular and binocular eye tests and can be administered on computer, cellular phones, and other electronic devices. Binary choice of match or no match, yes or no, present or absence provides simple means of automated testing by stepwise progression through staircase algorisms. Necessary devices have been introduced in order to fully utilize the power of binary choice self testing, such as, (1) printed display overlays for testing fine visual acuity at near, (2) bright illuminator of printed overlays to allow automated potential vision testing, (3) the use of complementary color lenses and color test isopters for binocular perimetry. All the programs are linked together in a multifunction electronic program tailored for Internet applications | 01-22-2015 |
| 20150062536 | System for determining a recommended magnification factor for a magnifier such as a loupe or an electronic magnifier to be used by a person - A system for determining a recommended magnification factor and/or a recommended range for magnification factors for a magnifier such as a loupe or an electronic magnifier to be used by a person wherein the system comprises at least one test object having a predetermined size and a portable camera for recording an image of at least a portion of the at least one test object and displaying at least a portion of the image of the at least one test object to the person, wherein the camera is provided with a light sensitive sensor for obtaining an image of at least a portion of the at least one test object, a display and processing means for processing the image obtained by means of the sensor and for displaying at least a portion of the image of the at least one test object on the display, in possible a magnified form, wherein the camera is provided with means for selecting the magnification of the at least one portion of the image which is displayed on the display and wherein the camera is arranged to calculate the recommended magnification factor and/or the recommended range for magnification factors on basis of a predetermined algorithm wherein the predetermined algorithm uses as parameters: a value representing the selected magnification for the displayed at least one portion of the image, the size of the at least one test object and a distance between an eye of the person and the at least one test object while the at least one test object is seen by the person by means of the portable camera; and/or parameters which can be derived from the value representing the selected magnification for the displayed at least one portion of the image, the size of the at least one test object and a distance between an eye of the person and the object while the at least one test object is seen by the person by means of the portable camera. | 03-05-2015 |
| 20150116666 | BINOCULAR VISUAL SIMULATOR - Disclosed is a binocular visual simulator for correcting eyeball aberration by using adaptive optics to form a chart image on both eyes. The binocular visual simulator includes; a chart-projecting unit for producing a chart light; an adaptive optics element for changing the chart light in accordance with wavefront aberration measured for both eyes; a beam splitter for dividing the changed chart light into two chart lights; a left eye correction unit for changing the divided chart light in accordance with wavefront aberration of the left eye so that the chart light is focused on a retina of the left eye; and a right eye correction unit for changing the divided chart light in accordance with wavefront aberration of the right eye so that the chart light is focused on a retina of the right eye. | 04-30-2015 |
| 20150289759 | APPARATUS AND METHOD TO OBTAIN CLINICAL OPHTHALMIC HIGH ORDER OPTICAL ABERRATIONS - An apparatus and method to improve the prescribing of customized ophthalmic corrections which contain higher order aberration. The apparatus enables the subjective measurement of higher order aberrations such as spherical aberration which can be used as part of the prescription for customized ophthalmic corrections. | 10-15-2015 |
| 20160029884 | USER AWARE DIGITAL VISION CORRECTION - A method, a system, and an information handling system dynamically provide individualized dynamic digital display correction for users of an electronic device. An information handling system detects a login of a first user profile that is associated with a first user. The information handling system then determines whether the first user profile has an associated first vision profile. In response to the first user profile having an associated first vision profile, a vision correction value associated with the first user is identified and a first change in image characteristics which may be applied to a graphical user interface (GUI) in order to achieve the vision correction value is calculated. A size of the display of the information handling system is detected and the first change in image characteristics is further adjusted based on this size before the adjusted image characteristic in image characteristics is applied. | 02-04-2016 |
| 20160089017 | CONTOUR INTEGRATION PERIMETRY VISION TEST - One aspect of the disclosure includes a method to assess vision function. In one embodiment, the method comprises providing a sequence of test images on a display ( | 03-31-2016 |
| 20160128560 | COMPUTERIZED REFRACTION PRESCRIPTION DETERMINATION WITH SPHERE CALCULATION - The present disclosure relates generally to a system and method for determining the refractive error of a person, more particularly determining the person's refractive error by using a computerized screen, and providing the person with a prescription for the person's preferred type of corrective lenses. The system and method do not require the trip or expense of a doctor visit, and are optimized for convenience and cost effectiveness. In a general embodiment, the present disclosure provides a method for determining a corrective lenses prescription for a person. The method includes, separately, for each eye of the person, determining the sphere prescription for the person via a computerized screen and without the use of a refractor lens assembly. Determining the sphere prescription is done, in part, by displaying a sphere figure to the person via the computerized screen and enabling the person to select at least one input, where the input corresponds to a sphere measurement. | 05-12-2016 |
| 20160198943 | EFFECTIVE ACUITY AND REFRACTION TARGETS | 07-14-2016 |
| 20190142268 | A DEVICE AND METHOD FOR MEASURING VIEWING DISTANCES | 05-16-2019 |
| 351240000 | Stereoscopic type | 10 |
| 20080316428 | Optotype presenting apparatus - An optotype presenting apparatus capable of performing a test with accuracy by minimizing differences in manners an optotype is seen by examinees which result from differences in height of eyes among the examinees comprising a display unit comprising pixels having color filters arranged in a longitudinal direction, a polarization optical member comprising first and second optical regions in the form of a longitudinal line corresponding to the arrangement of the pixels which are alternately arranged in a lateral direction, the regions converting light from the display unit into light having polarizing axes perpendicular to each other, an optotype selecting unit, and a display control unit controlling the pixels corresponding to the first regions to display first optotypes of the optotype to be presented to a right or left eye, and controls the pixels corresponding to the second regions to display second optotypes thereof to be presented to the other eye. | 12-25-2008 |
| 20090086166 | Optotype presenting apparatus - An optotype presenting apparatus, by which red and green optotypes can be visually perceived independently by right and left eyes even if red filters and/or green filters have different wavelength transmission characteristics, comprises a color display, a unit having a switch for selecting a test chart including visual acuity and red-green binocular visual performance test charts, wherein the binocular test chart includes the optotypes and is used in the test performed with the filters in front of the eyes, a memory storing color adjustment data in which at least one of color tones of the optotypes is varied with the characteristic of one of the filters, a unit for inputting a signal for selecting one of the data, and a unit controlling the display to display the selected chart and adjusting the tones by reading the selected data from the memory when the binocular test chart is selected. | 04-02-2009 |
| 20090244486 | Optotype presenting apparatus - An optotype presenting apparatus capable of presenting an optotype having a high degree of flexibility to an examinee's eye while a production cost of the apparatus is curbed comprises a main body comprising an optotype forming unit comprising first and second displays displaying optotypes, and a beam combiner combining optical paths of the displays, the optotype forming unit adjusting, if optotype light bundles have polarizing axes, the axes, and providing, if optotype light bundles have no polarizing axis, polarizing axes to the bundles, whereby the bundles form optotypes having the perpendicular polarizing axes, and a projection optical system for projecting the light bundles onto the eye at a test distance, an optotype selecting unit, and a display control unit controlling the displays to display binocular-vision-test optotypes if they are selected, and controlling one of the displays to display a visual-acuity-test optotype if it is selected. | 10-01-2009 |
| 20110069280 | METHOD AND APPARATUS FOR DETERMINING OCULAR MOTOR FUNCTION - A method and an apparatus are presented for determining ocular motor function in a patient. The patient is instructed to wear a pair of test glasses comprising a first lens having a first color and a second lens having a second color, where the first color and the second color differ. (N) light-emitting devices disposed in a screen are then activated in seriatim, where the (N) light-emitting devices can emit a light comprising the first color and where (N) is greater than 1. (N) images of the screen are synchronously captured upon receiving a signal from the patient indicating an activated light-emitting device is illuminated by a light comprising the second color. Finally, the (N) images are transformed into an ocular motor functioning map. | 03-24-2011 |
| 20120038887 | Apparatus for Determining Prescription for Prism Lenses for Diplopic Patients - An apparatus is provided for finding and defining a prescription for prism glasses for Diplopic patients and AMD patients whose Macula and Fovea are damaged enough that the patients have double vision, but, still have relatively good acuity. The apparatus positions lenses in infinitely variable locations horizontally and vertically in front of the patient's eyes until the patient indicates that he/she sees the two images fuse. The H-V coordinates of the location of the Optic center of each lens axis in relation to the patient's visual axis are decentration dimensions indicated for each eye by the H and V dials on the apparatus and are thus the basis for an accurate prescription for prism lenses. | 02-16-2012 |
| 20120092622 | OPTOTYPE PRESENTING APPARATUS - An optotype presenting apparatus for presenting an optotype used to test a visual function of an examinee includes: an optotype presentation part configured to present the optotype in a predetermined presentation region; a control unit configured to allow a test optotype to be presented in the optotype presentation part, the test optotype including a stereoscopic vision test optotype that generates a parallax so as to be seen by the examinee as floating or sinking from a predetermined reference plane; and an optotype splitting unit configured to split the test optotype presented in the optotype presentation part into an optotype for a left eye and an optotype for a right eye to present the test optotype to right and left eyes of the examinee, wherein the test optotype includes a guide optotype for guiding the examinee to see the stereoscopic vision test optotype stereoscopically. | 04-19-2012 |
| 20130308101 | Method and Apparatus for Determining Ocular Motor Function - A method and an apparatus are presented for determining ocular motor function in a patient. The patient is instructed to wear a pair of test glasses comprising a first lens having a first color and a second lens having a second color, where the first color and the second color differ. (N) light-emitting devices disposed in a screen are then activated in seriatim, where the (N) light-emitting devices can emit a light comprising the first color and where (N) is greater than 1. (N) images of the screen are synchronously captured upon receiving a signal from the patient indicating an activated light-emitting device is illuminated by a light comprising the second color. Finally, the (N) images are transformed into an ocular motor functioning map. | 11-21-2013 |
| 20150077711 | METHOD FOR OPTIMIZING AND/OR MANUFACTURING EYEGLASS LENSES - A method for determining an optimal eyeglass lenses design for a viewer ( | 03-19-2015 |
| 20150335235 | NETWORK OF DEVICES FOR PERFORMING OPTICAL/OPTOMETRIC/OPTHALMOLOGICAL TESTS, AND METHOD FOR CONTROLLING SAID NETWORK OF DEVICES - A network of devices for performing optical/optometric/ophthalmological tests comprises at least one patient-interface designed to display three-dimensional and/or stereoscopic images and provided with at least one display screen with a nested, three-dimensional projection/display capability, and at least one operator-interface designed to apply control and management functions to the patient-interface. | 11-26-2015 |
| 20160000317 | SYSTEM FOR MEASURING VISUAL FIXATION DISPARITY - There is disclosed herein a system for measuring visual fixation disparity comprising a display apparatus for presenting stereoscopic visual content to a patient. A sensing apparatus tracks eye movement of the patient. A controller controls the display apparatus to stereoscopically display a central image target alternately to a left eye and a right eye of the patient and tracking eye movement for a period of time as the central image target is alternated between the left eye and the right eye, and incrementally relocating the central image target left and right images until the patient perceives the left and right images to be physically coincident. | 01-07-2016 |
| 351241000 | Astigmatism type | 5 |
| 20120169998 | SUBJECTIVE WAVEFRONT REFRACTION USING CONTINUOUSLY ADJUSTABLE WAVE PLATES OF ZERNIKE FUNCTION - A wavefront device produces adjustable amplitudes in optical path differences and adjustable axis orientation angles. two substantially identical wave plates have a wavefront profile of at least the third order Zernike polynomial function which are not circularly symmetric, as denoted by Z(i,j) where i≧3 and j≠0. The wave plates are mounted in rotatable mounts with their optical centers substantially aligned with each other. An subjective wavefront refraction instrument and method are provided to correct low and high order aberrations of the eye, using the adjustable wave plates that have astigmatism and higher order Zernike function optical path difference wavefront profiles. | 07-05-2012 |
| 20140268060 | COMPUTERIZED REFRACTION AND ASTIGMATISM DETERMINATION - The present disclosure relates generally to a system and method for determining the refractive error of a patient, more particularly determining the patient's refractive error by using a computerized screen, and providing the patient with a prescription for the patient's preferred type of corrective lenses. The system and method do not require the trip or expense of a doctor visit, and are optimized for convenience and cost effectiveness. In a general embodiment, the present disclosure provides a method for determining a corrective lenses prescription of a patient. The method includes, separately, for each eye of the patient, determining the astigmatism prescription of the patient via a computerized screen, and determining the power of the corrective lenses prescription of the patient via the computerized screen. | 09-18-2014 |
| 20150009475 | METHOD AND APPARATUS THAT FACILITATES DETERMINING REFRACTIVE ERROR - Aspects are disclosed for determining refractive error. In an aspect, a line pattern is displayed to a user, and a distance between the line pattern and the user is ascertained. The line pattern includes a first and second line in which an aspect of the line pattern is varied, and where refractive error is quantified based on the distance and a selected variance of the line pattern. In another aspect, the varied aspect of the line is at least one of a width between the first and second line, a thickness of the first or second line, a darkness of the first line or the second line, or a color of the first line or the second line. An input corresponding to a focused line pattern variance selected by the user is then received, and a refractive error is quantified based on the input and an approximate distance between the line pattern and the user. | 01-08-2015 |
| 20160120402 | SYSTEM AND METHOD FOR MEASUREMENT OF REFRACTIVE ERROR OF AN EYE BASED ON SUBJECTIVE DISTANCE METERING - The method include: (a) displaying at least one dynamic target image of at least one sign over a display area; (b) receiving subjective feedback from the subject indicating that the subject is positioned at a maximum distance of best acuity (MDBA) from the target image, wherein the MDBA is the maximum distance in which the subject recognizes the sign; (c) measuring one or more parameter associated with distance, during the time the subject has reached the MDBA distance, using at least one sensor; (d) estimating the MDBA by estimating the distance between the eye of the subject and the display area in which the target image is displayed by using the sensor data and (e) calculating the refractive error of the eye according to the estimated MDBA and characteristics of the target image. | 05-05-2016 |
| 20160157711 | VISION TESTING FOR ASTIGMATISM - Disclosed are computer implemented methods for testing astigmatism which display differently coloured bars against a contrasting background. In one implementation, parallel coloured bars are separated and joined through various angles of rotation against a constant background. In another implementation one set of bars is formed by variable grating pattern which is rotated within an annulus of solid colour bars, desirably against a contrasting intermediate background and a reference background having a linear grating pattern. | 06-09-2016 |
| 351242000 | Chromaticity type | 10 |
| 20090073385 | ANOMALOSCOPE - An anomaloscope for measuring and monitoring color vision, whereby gross and subtle color vision changes due to a disease process may be readily monitored over time. The device has a series of bicolor or red/green light sources presented in pairs with amber/yellow light sources, for comparison with the red/green light sources. By varying the mix of red and green light, a progression is established. A test subject indicates a perceived match between a pair consisting of a red/green light and a yellow light, to indicate the tester's sensitivity to color. | 03-19-2009 |
| 20100007851 | Methods and Devices for Rapid Measurement of Visual Sensitivity - The present invention relates to methods for efficient adaptive measurement and classification of contrast sensitivity functions and spatiotemporal contrast sensitivity surface by selecting the most informative stimulus before each trial. Also disclosed are devices for implementing such methods. | 01-14-2010 |
| 20100033679 | IMAGE PROCESSING APPARATUS AND METHOD OF CONTROLLING IMAGE PROCESSING APPARATUS - An image processing apparatus includes an operation device and a color vision type detector. The operation device receives a user instruction input by a user, which indicates the selection of at least one of a plurality of processing functions to be applied onto image data by the image processing apparatus. The color vision type detector determines a color vision type of the user who inputs the user instruction based on the selection of at least one of the plurality of processing functions obtainable from the user instruction. | 02-11-2010 |
| 20100188639 | COMPUTERIZED METHOD FOR COLORBLINDNESS TESTING - A computer implemented method to form, display, and evaluate, a test for colorblindness, wherein the method selects one or more test images, displays those test images seriatim to a test subject using a visual display device. A response is received from the test subject to each of the displayed test images. Each response is compared to a nominal test subject response associated with the displayed test image. The type and number of test images displayed is determined based on the test subject's responses. | 07-29-2010 |
| 20110063572 | Method for measuring visual function and visual attention in a continuous performance test - The invention comprises a neuropsychological test method designed to measure a test subject's variables of visual attention for stimuli believed to preferentially elicit specific visual pathways. Target visual pathways include the magnocellular on/off, parvocellular chromatic red/green, koniocellular blue/yellow, and parvocellular achromatic pathways. Furthermore, the invention computes differential measures between the different stimuli types for diagnostic value. These computations include, but are not limited to, measures believed to elicit non-linear contrast gain control, on versus off pathways, and changes in performance over time. The test displays both target and noise (non-target) stimuli with different apriori probabilities at different stages of the test. The test can capture and analyze physiological measures, isoluminant points and critical flicker fusion points. In accordance with the present invention, a novel method and system called the “Variable Contrast Continuous Performance Test (VC-CPT)” is provided. | 03-17-2011 |
| 20130148083 | LENS ASSESSMENT DEVICE, CONTROL PROGRAM AND CONTROL METHOD OF LENS ASSESSMENT DEVICE - Disclosed is a method of quantitatively assessing whether the progress of an operation that enlarges a patient's clear vision region is satisfactory. A chromatic vision measurement is carried out on a patient who has received an operation that enlarges the patient's clear vision region, such as an operation that inserts a multi-focal lens into an eye to treat cataracts. The chromatic vision measurement data is compared, i.e., quantitatively assessed, with reference data (reference data obtained by carrying out chromatic vision measurements on a large group of people), in a quantitative assessment means. It is thus possible to objectively and appropriately assess whether a patient's post-operative progress is satisfactory. | 06-13-2013 |
| 20130293846 | METHOD AND APPARATUS FOR TESTING FOR COLOR VISION LOSS - A method and apparatus for administering eye tests to identify cone sensitivity loss associated with hereditary and acquired color vision loss which may be used for early detection, progress, treatment, and monitoring of eye conditions, traumatic brain injury, optic neuritis, systemic and neurological diseases including Glaucoma, Retinopathy, Age-Related Macular Degeneration, Multiple Sclerosis, Alzheimer's Disease, and Parkinson's Disease and retinal toxicity. Particularly, the method and apparatus disclosed uses a Cone Contrast Test (CCT) to test individuals for hereditary or acquired color vision loss associated with (a) early signs of potential disease/damage/toxicity in an effort to (i) provide opportunity for treatment, and (ii) prevent permanent eye damage, and (b) monitor progress and treatment of such disease/damage/toxicity. The system comprises a computer system including an input device and a display device, and the accuracy and repeatability of the testing is provided by repeated calibration using a colormeter. | 11-07-2013 |
| 20140218692 | METHOD AND APPARATUS FOR TESTING FOR COLOR VISION LOSS - A method and apparatus for administering eye tests to identify cone sensitivity loss associated with hereditary and acquired color vision loss which may be used for early detection, progress, treatment, and monitoring of eye conditions, traumatic brain injury, optic neuritis, systemic and neurological diseases including Glaucoma, Retinopathy, Age-Related Macular Degeneration, Multiple Sclerosis, Alzheimer's Disease, and Parkinson's Disease and retinal toxicity. Particularly, the method and apparatus disclosed uses a Cone Contrast Test (CCT) to test individuals for hereditary or acquired color vision loss associated with (a) early signs of potential disease/damage/toxicity in an effort to (i) provide opportunity for treatment, and (ii) prevent permanent eye damage, and (b) monitor progress and treatment of such disease/damage/toxicity. The system comprises a computer system including an input device and a display device, and the accuracy and repeatability of the testing is provided by repeated calibration using a colormeter. | 08-07-2014 |
| 20150036104 | Method and Apparatus for Testing for Color Vision Loss - A method and apparatus for administering eye tests to identify cone sensitivity loss associated with hereditary and acquired color vision loss which may be used for early detection, progress, treatment, and monitoring of eye conditions, traumatic brain injury, optic neuritis, systemic and neurological diseases including Glaucoma, Retinopathy, Age-Related Macular Degeneration, Multiple Sclerosis, Alzheimer's Disease, and Parkinson's Disease and retinal toxicity. Particularly, the method and apparatus disclosed uses a Cone Contrast Test (CCT) to test individuals for hereditary or acquired color vision loss associated with (a) early signs of potential disease/damage/toxicity in an effort to (i) provide opportunity for treatment, and (ii) prevent permanent eye damage, and (b) monitor progress and treatment of such disease/damage/toxicity. The system comprises a computer system including an input device and a display device, and the accuracy and repeatability of the testing is provided by repeated calibration using a colormeter. | 02-05-2015 |
| 20150085258 | COLOR-VIEWING FUNCTION MEASURING MEANS AND COLOR-VIEWING FUNCTION MEASUREMENT SYSTEM - [Problem] To be able to accurately measure color vision and color-viewing field for different colors. | 03-26-2015 |
| 351243000 | Illuminated | 10 |
| 20080204662 | Optotype presenting apparatus - An optotype presenting apparatus which presents an optotype for visual acuity test, the apparatus comprises: a display that is illuminated by a backlight and includes a light intensity changing device which changes backlight intensity; a background luminance selecting device which selects background luminance of the optotype among a plurality of preset levels, in which background luminance at each level corresponds to standard light intensity changing data in a changeable range determined by the light intensity changing device; and a correction device which corrects the standard light intensity changing data in the background luminance selecting device, the correction device including: an input device which inputs the background luminance measured by an illuminance meter, the measured background luminance being background luminance obtained when the light intensity changing device is operated based on the preset light intensity changing data; and a calculation device which determines correction light intensity changing data by comparing the background luminance input by the input device and the preset light intensity changing data. | 08-28-2008 |
| 20090073386 | ENHANCED HEAD MOUNTED DISPLAY - This invention discloses methods and apparatus for generating an ophthalmic lens with at least a portion of one surface free formed from a reaction monomer mix. | 03-19-2009 |
| 20090273758 | DYNAMIC SHAPE DISCRIMINATION VISION TEST - A vision testing system and method to assess vision function. In one embodiment, the vision testing system comprises: (1) a display; (2) a computer coupled to the display and configured to provide dynamic images, each including a substantially constant fixed point of fixation; and (3) a human input device coupled to the computer, wherein responses from a test subject are fed back to the computer to assess the test subject's vision function. | 11-05-2009 |
| 20110187997 | METHOD FOR THE OPTIMIZATION OF THE CONDITIONS OF EXECUTION OF THE VISION CONTRAST TEST, AND CORRESPONDING SYSTEM - Described herein is a method for optimization of the conditions of execution of the vision contrast test and the corresponding system with which to implement said method so as to be able to guarantee optimal conditions throughout the test session even when not it is not possible to respect the standards. Furthermore, the method comprises a self-calibration procedure, which definitively eliminates the operations of calibration of the system by specialized centres. | 08-04-2011 |
| 20110228228 | GLARE ASSEMBLY FOR COMPUTERIZED EYE TEST DISPLAY - A monitor is used to display a visual acuity test operated by software from an associated computer. A patient is spaced a predetermined distance from the monitor during the testing procedure, and individual, multiple LED housings are equally spaced about a center point of the monitor to direct light toward the patient during at least a portion of the test procedure. The light emanating from the individual housings is a diffuse, unfocused light to simulate glare, and the intensity of the light may be selectively altered. Conducting acuity testing under glare conditions determines if there is any reduction or fall off in the patient's acuity vision under such circumstances and provides an indication of whether the patient may require cataract surgery or has another ocular problem. | 09-22-2011 |
| 20140036232 | GLARE ASSEMBLY FOR COMPUTERIZED EYE TEST DISPLAY - A monitor is used to display a visual acuity test operated by software from an associated computer. A patient is spaced a predetermined distance from the monitor during the testing procedure, and individual, multiple LED housings are equally spaced about a center point of the monitor to direct light toward the patient during at least a portion of the test procedure. The light emanating from the individual housings is a diffuse, unfocused light to simulate glare, and the intensity of the light may be selectively altered. Conducting acuity testing under glare conditions determines if there is any reduction or fall off in the patient's acuity vision under such circumstances and provides an indication of whether the patient may require cataract surgery or has another ocular problem. | 02-06-2014 |
| 20150116667 | APPARATUS AND METHODS FOR TESTING VISUAL FUNCTION AND FUNCTIONAL VISION AT VARYING LUMINANCE LEVELS - A test of visual function and/or functional vision may be performed at varying luminance levels. A first course may be selected for a subject. A given course may comprise a layout having a beginning point, at least one turn, at least one obstacle, and an ending point. The first course may be illuminated with a first luminance level based on an estimated lower light sensitivity cutoff. The subject may be prompted to perform a first run of the test. The test may comprise, from the beginning point to the ending point, navigating the layout of the first course by walking around the at least one turn and avoiding the at least one obstacle. A determination may be made as to whether the subject successfully completed the first course based on one or both of speed or accuracy. | 04-30-2015 |
| 20150313458 | GLARE ASSEMBLY FOR EYE TEST DISPLAY - A monitor/display is used to display a vision test. A patient is spaced a predetermined distance from the monitor/display during the testing procedure, and individual, multiple LED housings are equally spaced about a center point of the monitor/display to direct light toward the patient during at least a portion of the test procedure. The light emanating from the individual housings is a diffuse, unfocused light to simulate glare, and the intensity of the light may be selectively altered. Conducting vision testing under glare conditions determines if there is any reduction or fall off in the patient's vision under such circumstances and provides an indication of whether the patient may require cataract surgery or has another ocular problem. An assembly allows an existing vision testing system to be easily modified to provide glare light testing capabilities. | 11-05-2015 |
| 20150342455 | TARGET PRESENTING APPARATUS - A target presenting apparatus includes: a display for emitting a target light flux; a concave mirror for receiving the target light flux in such a manner as to displace the target light flux from an optical axis thereof; a housing for accommodating the concave mirror and the display therein; and an optical member, placed in the housing, for guiding the target light flux from the inside to the outside of the housing to present a target to an examinee. | 12-03-2015 |
| 20170231486 | Apparatus for use in the measurement of macular pigment optical density and/or lens optical density of an eye | 08-17-2017 |
| 351244000 | Having support or cabinet | 1 |
| 20150351624 | EFFECTIVE ACUITY AND REFRACTION TARGETS - A viewing target for a visual acuity and refraction measurement includes at least one line comprising a width dimension that is below a resolution limit width (hereinafter “RLW”) of a test subject visual acuity, and an adjustable length dimension that is initially set at greater than the RLW of the test subject visual acuity. A base, at least approximately intersecting the line, has a thickness along the direction of the length of the line that is greater than the RLW of the test subject visual acuity. The length dimension of the line is adjustable in increments small enough to effectively approximate the visual acuity of the test subject by determining a shortest resolvable line and a next smaller line that is not resolvable by the test subject. | 12-10-2015 |
