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7618143 |
Pupilometer
A pupilometer comprises image capturing means, illumination means comprising two spaced apart light sources, stimulation means, and image processing software, the illumination means generating and...
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7597445 |
Program for optometry, recording medium and subjective optometric apparatus having the optometric program, and optometric method
The present invention is directed to a program for optometry, which is used for a control device. The program includes a first unit to measure an amount of heterophoria of eyes of an examinee to be...
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7549749 |
Visual stimulator
The present invention relates to a visual stimulator, which comprises a light stimulation source, a regulable attenuator of light, mirrors for reflecting light and light detectors. The visual...
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7533992 |
Light source for diagnostic instruments
A new light source (e.g. LEDs) enables new designs in all or some key elements within diagnostic instruments. New light sources allow improvements in life of light source, infra red emitted, power...
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7510283 |
High resolution imaging for diagnostic evaluation of the fundus of the human eye
A system for diagnostically evaluating the health of tissue within the fundus of an eye includes a fs laser source, an adaptive optical assembly, an imaging unit, and a computer. The adaptive...
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7478911 |
Perimeter
The perimeter comprises a display device 1 , infrared light-emitting diodes 2 , a CCD camera 3 , a half mirror 4 , an image processing device 5 , a computer 6 , and an operating switch 7 ....
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7448751 |
Portable video oculography system with integral light stimulus system
A goggle based light-weight VOG system includes at least one digital camera connected to and powered by a laptop computer through a firewire connection together with an integral visual light...
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7441900 |
Contrast chart device, contrast sensitivity measuring device and contrast sensitivity measuring method
A contrast chart device of the present invention comprises a contrast target presenting part for presenting a contrast target for a contrast sensitivity test at prescribed timing; a pupil data...
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7427138 |
Method and apparatus for improving visual perception
A method of improving the visual perception ability of a person by: displaying to the person in at least one evaluation sessions a plurality of images selected to test the visual perception ability...
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7407289 |
Optometry apparatus
The optometry apparatus includes an index projecting optical system for projecting an index for cross cylinder test to an eye for shortening examination time, a variable cross cylinder lens...
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7390091 |
Vision testing apparatus
A vision test apparatus includes a viewing assembly connected to a chassis wherein the viewing assembly creates an optical path between an image display and at least one front lens. A near/far...
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7390090 |
Ocular measurement apparatus and method
According to an aspect of the present invention, there is provided a measurement apparatus for measuring a property of an eye of a subject, having a target arranged to be viewed by the subject, the...
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7311401 |
Eye viewing device comprising eyepiece and video capture optics
There is described in one embodiment an eye viewing device for viewing a structure of an eye such as a retina. The eye viewing device can include an image sensor. In one embodiment an eye viewing...
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7309127 |
Ophthalmic measuring apparatus
A first movement unit for moving a condensing position so that a light flux from a light source is condensed on a place close to a retina of a subject eye, and a second movement unit for optically...
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7300154 |
Ophthalmologic image taking apparatus
Provided is an ophthalmologic image taking apparatus with which an image of the eye to be examined can be taken with an appropriate light intensity and at an appropriate gain. In the case where an...
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7296895 |
Sequential scanning wavefront measurement and retinal topography
An improved sequential scanning method and apparatus for measuring wavefront aberration involves angularly displacing a measurement beam from a parallel beam striking the corneal surface at a...
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7267437 |
Biomimicking applications of human sensory systems
A method of sensory training and testing systems focusing upon the development of pre-attentive and attentive vision for the enhancement of the individual's ability to perform specific functions.
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7258438 |
Retinal flux density meter and method of use
A system for approximating flux density of light on a human retina. A housing has an opening allowing light to pass to inside the housing. A baffle coupled to the housing replicates a facial cutoff...
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7249852 |
Eye characteristic measuring apparatus
Measurement of an eye characteristic is performed more accurately and at high speed by setting a measurement condition of a light receiving optical system with a long focal point or high...
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7249851 |
Eye characteristic measuring apparatus
An eye characteristic measuring apparatus can effectively and properly measure and display wavefront aberration of an eye regardless of the eye state. A first illumination optical system ( 200 A)...
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6755529 |
Method and apparatus for measuring contrast sensitivity
A novel contrast sensitivity test utilizing an adaptive contrast threshold algorithm is proposed. The contrast sensitivity test is embodied as a two-alternative forced choice examination using...
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6739722 |
Apparatus and methods for measuring accommodation of a lens in an eye
Apparatus for measuring accommodation of a lens in an eye includes a target, a Badal lens, and a viewing aperture, where the Badal lens and the viewing aperture are positioned so that when the...
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6729728 |
Back projection visual field tester
One embodiment of the present invention is a visual field tester that includes: (a) a projection screen; (b) a stimulus projection system that projects a light stimulus onto a first side of the...
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6726327 |
Method and apparatus for testing the vision of a video display terminal user
This invention is a programmable vision testing apparatus and method for use in conducting optometric examinations of video display terminal (VDT) users. The apparatus uses a digital display screen...
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6715878 |
Apparatus for measuring visual performance
An apparatus for measuring visual performance suitable for carrying out various visual functionality tests in controlled and variable opening conditions of the pupils of a subject. The apparatus...
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6652102 |
Visual function test apparatus
A visual function test apparatus for testing a visual function by presenting an optotype to an examinee's eye is disclosed. This apparatus includes a first half mirror disposed on a projection...
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6606577 |
Method and system for measuring flicker sensitivity distribution, and computer-readable recording medium storing flicker sensitivity distribution measuring program
A flicker sensitivity distribution measuring method is provided to maintain a subject in a fixation state and to accurately measure flicker sensitivity distribution. The sensitivity distribution...
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6585377 |
Device and method that allows an objective measurement to be taken of the size and morphological pattern of the degradation of the image in scotopic vision
Device and method that allows an objective measure to be taken of the size and morphological pattern of the degradation of the image in scotopic vision. It consists of a black front screen ( 1 )...
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6543898 |
Interactive self-diagnostic system
A method of determining an eyeglass prescription for correcting a user's vision is provided. The method includes: prompting the user for selective parameters; configuring an eye chart for display...
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6527391 |
Method and an apparatus for performing a visual field test, and computer programs for processing the results thereof
The invention relates to visual field tests, wherein a plurality of visual stimuli are successively presented to a test subject and the responses from the test subject are recorded in order to...
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6517204 |
Electronic depth perception testing system and apparatus for conducting depth perception tests
An electronic eye depth testing method comprises a three dimensional cubic space displayed on a display screen, wherein the cubic space has a first image of a three dimensional object and a second...
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6505937 |
Test slide for a vision testing apparatus
A test slide is designed for use in a vision testing apparatus. The test slide comprises several component layers. Those layers include a light diffusing layer, an optotype film layer, a color...
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6474817 |
Method for establishing fixation in visual field perimetry
The present invention provides a method for establishing fixation during computerized visual field perimetry, requiring the subject to fixate on a stationary target for a brief instance as he/she...
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6454412 |
Display screen and vision tester apparatus
The present invention relates to an improved display screen for a vision tester apparatus for use in optometric examinations to simulate the actual alphanumeric and graphical images of a modern,...
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6439722 |
System and method for synchronizing the appearance of color images
A system for color characterization of an self-illuminating imaging display device and synchronization of the appearance of color images displayed on a self-illuminating imaging device is disclosed...
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6422701 |
Visual field tester
One embodiment of the present invention is a visual field tester that includes: (a) a high intensity light source; (b) an optical fiber; (c) scanning optics, wherein light output from the light...
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6392797 |
Viewing apparatus
The invention is directed to a viewing arrangement ( 1 ) having a viewing optic ( 3 ) for viewing an object ( 5 ) along a viewing beam path. The viewing arrangement ( 1 ) also has an illuminating...
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6373571 |
Disposable contact lens for use with an ophthalmic laser system
A device for use in laser ophthalmic surgery includes a laser system, a disposable contact lens and an adjustable retainer ring for mounting the contact lens on the laser system. In order to...
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6341866 |
Computer system for performing eye depth perception tests
A computer program for an eye depth perception test method comprises a personal data entry form for recording statistical information of a subject to be tested in a personal data step of the...
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6244713 |
Optometric chart presenting apparatus
An optometric chart presenting apparatus which has a casing provided with a pair of test windows for right eye and for left eye for presenting an optotype optically placed at a predetermined...
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6220708 |
Method and device for producing multicolored patterns
A method and device for producing multicolored patterns can test the color vision or the reaction of a viewer. The patterns are produced by at least one switchable light source and at least two...
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6062692 |
Vision tester
A vision tester comprises a slide projector for projecting a visual indication chart onto a curved display screen via a mirror rotated by a motor. The center of curvature of the curved display...
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6036317 |
Method of spectral or colorimetric characterization of a self-illuminating imaging system
The invention relates to a method of spectral or colorimetric characterisation of a self-illuminatng imaging system, in which the imaging system produces a color field which is matched visually...
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5969792 |
Variable luminance contrast sensitivity and glare vision test process
A process for testing vision sensitivity from a target is set forth. Specifically, I illuminate the vision sensitivity chart with only indirect light and in the total absence of direct light. In...
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5943118 |
Arrangement and method for illumination in a stereoscopic ophthalmic microscope
Ophthalmic device, such as a slit lamp or a visual acuity testing device or a combination of these devices, for variable illumination of the patient's eye with illumination fields of different...
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5933210 |
Ophthalmological method and instrument for producing dichoptic stimuli
A method for presenting two simultaneous images having respective cross-sectional areas A 1 and A 2 , on respective first and second 2-dimensional image arrays so as to be seen by an observer as a...
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5929972 |
Communication apparatus and method for performing vision testing on deaf and severely hearing-impaired individuals
An apparatus and method for communicating to a deaf or severely hearing impaired individual while vision testing utilizing indicator lights (52A), (52B), (52C), and (52D) positioned in the same...
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5907389 |
Remote-controlled LCD sight-testing instrument
A remote-controlled LCD sight-testing instrument which includes a mainframe and a remote controller, the mainframe having a display module, the display module being controlled by a control switch...
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5903335 |
Apparatus for displaying visual acuity chart with constant magnification
In an apparatus for displaying a visual acuity chart table, in response to the change of the distance between an eye to be examined and an apparatus body, a concave mirror of a visual chart optical...
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5889577 |
Optical apparatus or apparatus for detecting direction of line of sight, and various kinds of same apparatus using the same
An optical apparatus includes a pupil illuminator for illuminating the pupil of an eye of an individual, an imager for obtaining an image of the pupil and an image of the cornea of the eye, a...
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