| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 351224000 | Perimeter type | 31 |
| 20100002192 | PERIMETER - A perimeter has fixation state judging means for individually judging a fixation state of an examinee in connection with each presented stimulus, and the fixation state judging means individually judges the fixation state whenever the stimulus is presented. Even if defective fixation is judged, retest is conducted on only a point where the stimulus was presented, which was judged to be defective fixation. Then, examiner's burden and examinee's burden can be lightened, the test time can be made shorter and test efficiency can be improved in comparison with a case where the whole test is retried from the first as a conventional way. | 01-07-2010 |
| 20100171926 | Apparatus for treating visual field loss - A method and apparatus for treating visual field loss by disassociating and differentiating between the ambient and focal visual information of a patient. This is achieved by providing a stationary target for the patient to focus on and a moving, spinning or rotating background relative to the stationary target. | 07-08-2010 |
| 20100182570 | OPHTHALMIC EXAMINATION SYSTEM - [Problem to be Solved] | 07-22-2010 |
| 20100201947 | OCULAR CENTRATION OF VISUAL AXIS AND EVALUATION OF RETINAL FUNCTION - A method and device to assess centration of a visual axis, evaluate retinal function, foveal function, and/or visual field. | 08-12-2010 |
| 20100315594 | HIGH PRECISION CONTRAST RATIO DISPLAY FOR VISUAL STIMULUS - Embodiments of the present invention include approaches for controlling light valve devices to improve the range and precision of the contrast ratio and the grayscale levels of a display used for visual field tests. In one embodiment, two or more illumination devices are used to enable the display device to display a wide range of contrast stimuli at precise illumination intensities over a fixed background illumination level. In another embodiment, the gamma curves of the display elements are adjusted to allow greater variations in the brightness of the display. | 12-16-2010 |
| 20110122367 | PERIMETER - A perimeter of the present invention including: visual field scanning screen generating means; fixation image displaying and controlling means; visual target scan line parallel setting means; visual target displaying and controlling means; statically displaying and controlling means for a specific time; static display position storing means for a specific time; kinetic display and control starting means for giving rise to another of the visual target kinetically based on the start point of a specific time from the position which the static display position storing means stores; detecting means; detection position storing means; distance storing means; and scanning continuation means. | 05-26-2011 |
| 20110176112 | METHOD OF KINETIC PERIMETER - A method for kinetic perimeter of the present invention including: a step of visual field scanning screen generating means; a step of fixation image scan line setting means; a step of fixation image displaying and controlling means; a step of visual target scan line orthogonally setting means; a step of visual target displaying and controlling means; a step of statically displaying and controlling means; a step of static display position storing means; a step of kinetic display and control starting means; a step of detecting means; a step of detection position storing means; a step of visual field mapping screen generating means; a step of visual field mapping means; a step of under the same fixation image scanning continuation means; and a step of, scanning switching means to the scanning under the next fixation image. | 07-21-2011 |
| 20110194075 | METHOD AND APPARATUS FOR VISUAL FIELD MONITORING - Embodiments provide methods and systems for the modeling and analysis of visual fields. Methods for global and regional measurement of visual sensitivity and quantification of field loss are provided in accordance with various embodiments. Further embodiments provide systems and methods for the diagnosis of diseases affecting the visual field. In addition, embodiments provide methods and systems for measuring and quantifying the volume of the Hill of Vision for an individual subject. | 08-11-2011 |
| 20110205493 | PERIMETRIC METHOD - The invention relates to a perimetric method for measuring a visual field of an eye, carried out with an ophthalmological device, particularly a perimeter or similar device, and an apparatus for data processing provided with a data base, wherein the data base includes data sets of visual fields, wherein a retina of the eye is divided into points that represent the visual field, wherein the points of the retina are exposed to optical stimuli of a defined intensity, wherein a reaction to a stimulus is calculated as a measurement result, wherein at least two predefined points are measured, wherein the predefined points each lie in anatomically independent nerve fibre regions and are in a statistically significant relation to each other, wherein a visual field of the eye is derived from the measurement results and the data sets. | 08-25-2011 |
| 20110234979 | PERIMETER AND METHOD OF CONTROLLING PERIMETER - A perimeter according to the invention has fixation state detecting means for detecting a fixation state of an examinee in association with each portion where a stimulus should be presented, and necessity of retest is judged for each stimulus. Even if no good fixation state is detected for some stimulus, it is sufficient to retest the portion where the stimulus was presented. Then, burdens on the examinee or an examiner are lighter and the test time is shorter, and test efficiency is increased thereby. | 09-29-2011 |
| 20110234980 | PERIMETER AND METHOD OF CONTROLLING PERIMETER - In a perimeter, luminance judging means measures a sensitivity of an examinee, sensitivity deviation computing means obtains a sensitivity deviation, means for computing ratio to p value obtains a ratio to p value, and means for adding ratios to p value adds ratios to p value of respective measurement positions. The sensitivity deviation at the position where sensitivity dispersion is large is low evaluated and the sensitivity deviation at the position where the sensitivity dispersion is small is highly evaluated. Then, an element of the position where the sensitivity was changed can be also considered in a graph showing test results of perimetry periodically conducted with time. | 09-29-2011 |
| 20110267585 | MACULAR REGION VISUAL DEFECT INDEX CALCULATION APPARATUS - A macular region visual defect index calculation apparatus including: visual field probe screen generating means; fixation image displaying and controlling means; probe region setting means; probe points setting means; visual target displaying and controlling means; first counting means; second detection means; second counting means; and visual defect index calculation means for dividing the number of times counted and stored on a memory device by the second counting means, by the total number counted and stored on a memory device by the first counting means; wherein the probe region being locally set mainly in macular region. So, according to the present invention of a macular region visual defect index calculation apparatus, a ratio of visual defect region to macular region can be calculated as an index, and the degree of visual defect against macular region can be numerically grasped. | 11-03-2011 |
| 20110273670 | Perimeter - A perimeter of the present invention including: visual field scanning screen generating means; fixation image displaying and controlling means; visual target scan line parallel setting means; statically displaying and controlling means; static display position storing means; static display and control stopping means; kinetic display and control starting means; detecting means; detection position storing means; distance storing means; kinetic scan stopping means; and scanning continuation means to the position of the visual target stored by the detection position storing means. | 11-10-2011 |
| 20120154751 | Visual perimeter measurement system and method - In one example of the invention a patient display is provided on which a fixation graphic or video is shown in substantially the centre of the display, and then target graphics or video are shown at different positions on the display about the centre. A test subject is positioned in front of the patient display a known distance therefrom, and a camera captures an image of the test subject's eyes, to allow gaze direction determination to be performed. The captured images are displayed to a clinician user by a controlling test application, the clinician making a determination based on the images as to whether the test subject saw a target graphic or video when it was displayed. The clinician user then makes an appropriate input into the controlling test application, which also logs the position at which the target image was displayed. By displaying target graphics at multiple locations on the screen and logging the clinician inputs, the controlling test application is able to build up a plot of the peripheral vision field of the test subject. This plot can then be graphically displayed to the clinician user, and stored with the test results for future clinical use. | 06-21-2012 |
| 20120182523 | METHODS FOR REDUCING TEST-RETEST VARIABILITY IN TESTS OF VISUAL FIELDS - The invention relates to test-retest variability in tests of visual fields, and methods and systems useful in reducing this variability. The various methods and systems of the invention use gaze-direction data to improve the estimate of scotoma edges and to otherwise adjust for test-retest variability in perimetry. This may be useful in assessing progression of a patient's condition, such as glaucoma | 07-19-2012 |
| 20120224144 | PERIMETER - In a perimeter having means for measuring a visual field of an eye to be examined, means for monitoring fixation state and means for lighting the eye to be examined with a brightness necessary for monitoring the fixation state of the eye to be examined and means for correcting visibility, means for correcting visibility is provided so as to be freely moved between a set position corresponding to a measurement position of the eye to be examined and a stored position retracted to an outer periphery of a projection member. Such a perimeter further has means for detecting whether means for correcting visibility is at the set position or the stored position and an illustration controller for changing brightness of the illumination onto the eye to be examined through the means for lighting according to the detected position of means for correcting visibility. | 09-06-2012 |
| 20120236262 | HIGH PRECISION CONTRAST RATIO DISPLAY FOR VISUAL STIMULUS - Embodiments of the present invention include approaches for controlling light valve devices to improve the range and precision of the contrast ratio and the grayscale levels of a display used for visual field tests. In one embodiment, two or more illumination devices are used to enable the display device to display a wide range of contrast stimuli at precise illumination intensities over a fixed background illumination level. In another embodiment, the gamma curves of the display elements are adjusted to allow greater variations in the brightness of the display. | 09-20-2012 |
| 20120274905 | SYSTEMS AND METHODS FOR IMPROVED VISUAL FIELD TESTING - Systems and methods for improving the reliability of visual field test results are presented. In one embodiment, images of the eye are recorded during the presentation of visual stimuli and are displayed to the user to provide information on eye motion, eye position relative to trial lens, and eyelid closure during the test. Individual or combined images can be displayed for individual stimuli, specific test points, or points in the gaze trace in various embodiments of the invention. | 11-01-2012 |
| 20120287404 | SYSTEM AND METHOD FOR REHABILITATING VISUAL DEFECTS - The present invention relates to a method of customizing a lens system with selective application of a translucent colored material to stimulate alternative visual pathways and restore vision in the defective areas. The placement of the translucent colored material is based on the results of a visual field examination to determine the areas of visual defect and the areas of normal vision. The lens system is then placed adjacent to the patient's eyes such that the areas of normal vision see through the translucent filter to receive visual information. | 11-15-2012 |
| 20130070204 | Systems and Methods for Refractive Correction in Visual Field Testing - Systems and methods for providing variable refractive correction in a visual field testing device are presented. One embodiment of the variable refractive correction involves two or more aligned transmissive plates arranged to produce changes in refractive power by translation or rotation of the plates relative to each other. Several alternative designs for providing variable refractive correction are described. The refractive correction can be set manually or automatically based on knowledge of the refractive error of a specific patient and spherical and cylindrical refractive correction are possible. Additional lens systems can be used to extend the range of refractive correction to accommodate a larger patient population. | 03-21-2013 |
| 20130155376 | VIDEO GAME TO MONITOR VISUAL FIELD LOSS IN GLAUCOMA - Systems and methods for providing a video game to map a test subject's peripheral vision comprising a moving fixation point that is actively confirmed by an action performed by the test subject and a test for the subject to locate a briefly presented visual stimulus. The video game is implemented on a hardware platform comprising 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 visual field test that produces a visual field map of the thresholds of visual perception of the subject's eye that may be compared with age-stratified normative data. The results may be transmitted to a health care professional by telecommunications means to facilitate the diagnosis and/or monitoring of glaucoma or other relevant eye diseases. | 06-20-2013 |
| 20130201452 | SUPRA-THRESHOLD TEST AND A SUB-PIXEL STRATEGY FOR USE IN MEASUREMENTS ACROSS THE FIELD OF VISION - One embodiment of the invention provides a method for performing a supra-threshold test of sensitivity across a visual field of a subject. The method includes presenting a stimulus at each location of a set of locations spread across the visual field and obtaining for each stimulus a result indicating whether or not the stimulus was seen by the subject. The method further includes determining for each location whether or not to re-present a stimulus at that location, wherein for a given location, the determining involves combining results obtained from multiple locations. These multiple locations are defined by a cluster associated with the given location, with the cluster being determined based on the paths of optic nerve fibre bundles across the visual field. | 08-08-2013 |
| 20140036231 | PERIMETER - The perimeter ( | 02-06-2014 |
| 20140125953 | Visual field visual function mapping apparatus - A visual field visual function mapping apparatus, with respect to the visual field mapping image obtained from the visual field scanning apparatus, including: along each concentric circle trajectory visual field mapping rectangle width average calculation means; and visual field mapping rectangle width average radial direction transition graph generating means. | 05-08-2014 |
| 20140218691 | Visual Perimeter Measurement - In one example of the invention a patient display is provided on which a fixation graphic or video is shown in substantially the centre of the display, and then target graphics or video are shown at different positions on the display about the centre. A test subject is positioned in front of the patient display at a known distance, and a camera captures an image of the test subject's eyes, to allow gaze direction determination to be performed. The captured images are displayed to a clinician user by a controlling test application, the clinician making a determination based on the images as to whether the test subject saw a target graphic or video when it was displayed. The clinician user then makes an appropriate input into the controlling test application, which also logs the position at which the target image was displayed. By displaying target graphics at multiple locations on the screen and logging the clinician inputs, the controlling test application is able to build up a plot of the peripheral vision field of the test subject. This plot can then be graphically displayed to the clinician user, and stored with the test results for future clinical use. | 08-07-2014 |
| 20140362346 | METHOD FOR ASSESSING FUNCTION OF THE VISUAL SYSTEM AND APPARATUS THEREOF - This invention relates to a method for providing markers for evaluating and/or practising the visual field recognizable by an eye, and/or eyes, and/or visual system of a person. The method relies on the reporting of the person of identifications of fixation objects only identifiable when the eye or eyes of the person are accurately fixated on the fixation object. Accordingly active monitoring of a saccade, if a saccade triggering stimulus is employed; or smooth pursuit, if smooth pursuit triggering stimulus is employed, of the eye of the person is not needed for determining whereto to eye or eyes are fixated. The present invention also relates to the use of a system employing the method of the invention. The present invention further relates to a system for the method of the invention and a software product for the system. | 12-11-2014 |
| 20140375955 | Analysis method - An analysis method for determining a morphological property of an optic disc and/or a retinal nerve fiber layer of an eye is, performed an ophthalmological device, in particular a perimeter, and also means for data processing using a database with functional data of a field of vision and morphological data of the optic disc and/or retinal nerve fiber layer, wherein, by the ophthalmological device, functional data of a field of vision of the eye are measured, a retina being divided into points representing the field of vision, optical stimuli of a defined intensity being provided to the points of the retina, a reaction to a stimulus being determined as a measuring result of a point, the measuring results having a statistically significant relation to morphological data of the optic disc and/or the retinal nerve fiber layer, the morphological data nerve fiber layer being derived from the measuring results and the datasets. | 12-25-2014 |
| 20150342452 | PERIMETER - A perimeter having means for setting a measurement coordinate system CS, a detector for blind spots, a means for measuring a visual field of the same subject eye based on set measurement coordinate systems at a first and second point of time and a memory for storing the position of the blind spot, a detector for detecting the position of the blind spot at the second point of time and computing amount of deviation with the position of the blind spot, and a control for conducting new measurement coordinate based on the deviation (α). | 12-03-2015 |
| 20160183781 | APPARATUS AND METHOD FOR ASSESSING AND IMPROVING THE RELIABILITY OF A VISUAL FIELD TEST - Apparatus for testing a patient's visual field, the apparatus comprising: means for recording the results of the patient's responses to one or more visual field targets ( | 06-30-2016 |
| 20160249798 | AUTOMATED PERIMETER | 09-01-2016 |
| 351226000 | With bowl type screen | 1 |
| 20090122263 | OPHTHALMIC APPARATUS - A virtual sensitivity value which is obtained, variously changing a pupil diameter is measured in advance for many examinees, and volume of correction which is necessary at the time when the sensitivity value is corrected into one in a standard pupil diameter is stored as correction volume database. An apparatus has measurement means for measuring the pupil diameter of the eye to be examined, computing means for computing a shape parameter rate of the measured pupil diameter to the standard pupil diameter, and judgment means for computing volume of correction by referring to the correction volume database from the shape parameter rate and correcting the virtual sensitivity value obtained by measurement of the eye to be examined and for judging a sensitivity step of the eye to be examined. | 05-14-2009 |
