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5220361 |
Gaze tracking for field analyzer
A field test apparatus is disclosed which is interactive both in the automated positioning of trial lenses (used to correct the patient's focal distance to the tester hemispherical projection...
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5202711 |
Apparatus for examining the field of vision
Disclosed is an apparatus for examining the field of vision, having a scanning device, which is provided with beam deflecting and beam imaging elements, via which the illumination light beam from...
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5187506 |
Method and apparatus for determining physiological parameters based on pupil response
Portable, scanning, self-measuring pupillometers. With pupillometers described herein, cost effective and accurate central nervous system impairment can be quickly determined, thereby reducing...
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5187507 |
Method of and apparatus for diagnosing peripheral field defects and other peripheral retinal damage
A method of diagnosing glaucomatous field defects of particular use in diagnosing the early stages of glaucoma and ocular hypertension is disclosed. The method comprises displaying an image...
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5179466 |
Device for projecting light spots onto a surface
A device for projecting light spots onto a surface, comprising a device for generating and concentrating light, a pierced member which is movable before said device and endowed with means for...
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5114222 |
Method and apparatus for perimetry
A perimetry system uses pupillary light response to a small bright light spot or other suitable stimulus which moves at a constant speed in generally a circular path centered on a fixation mark...
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5108170 |
Perimetric instrument
The present invention relates to a perimetric instrument for measuring a range of a visual field of an eye of a man, and more particularly to a perimetric instrument which includes an abnormal...
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5080478 |
Apparatus for testing dark adaptation
Apparatus for testing dark adaptation comprises a test panel. Four test stimuli, comprising arrays of light emitting diodes, are arranged on the test panel around a fixation light emitting diode....
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5066117 |
Perimeter
A perimeter has a predetermined index to be projected onto a fundus of an eye to be examined and an index projection imaging optical system which can form an intermediate image of the index in...
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5061059 |
Self-detection glaucoma test method
A method for the detection of glaucoma which permits the early detection of glaucoma without expensive equipment or a technician. The device for the method comprises a planar surface having a...
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5050983 |
Visual testing method and apparatus
Method and apparatus for visual testing. In one embodiment, for perimetry testing, the method uses threshold light-stimulus values determined at multiple seed locations in a visual field to...
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5048947 |
Process for measuring eye movement
An improvement is described in regard to a target which is useful in a process for measuring eye movement of a subject. The target includes a support member with a flat or planar bottom surface...
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5046835 |
Apparatus for testing visual functions of human eyes
An automatic perimeter wherein the eye to be examined is maintained in a predetermined position to look at an eyepiece which focuses enlarged images of a series of stimuli on the retina. Stimuli...
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5037194 |
Ophthalmologic apparatus and method of compounding the image of an eye to be examined
An ophthalmologic apparatus characterized by the provision of a device for introducing thereinto an eye fundus image at a point in time earlier than the point in time of view field measurment, a...
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5035500 |
Automated ocular perimetry, particularly kinetic perimetry
A first light is moved and illuminated by an x-y plotter mechanism on a rear projection screen under computer control so as to be continuously fixated by an eye of a test subject. The computer also...
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5024519 |
Apparatus and method for visual-field testing
Apparatus and method for visual-field testing. The apparatus includes an ocular device which fits over a subject's eye and which has a cavity-like inner surface dimensioned to encompass the...
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4995717 |
Device for moving eye campimetry
The computer-assisted moving eye campimetric device is a computer display of a moveable test grid having a central reference spot. The patient's eye is kept focussed on the spot by giving the...
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4971434 |
Method for diagnosing deficiencies in and expanding a person's useful field of view
A method for diagnosing deficiencies in and expanding the size of a person's "Useful Field Of View" (UFOV). The UFOV is determined by the eccentricity (in degrees of visual angle) at which...
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4927259 |
Apparatus and method for testing visual field
An apparatus and method for testing the visual field of a person is provided in which the apparatus comprises light point sources distributed over the visual field of the person being examined, an...
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4854694 |
Eye fixation monitor
An eye fixation monitor for ophthalmological examination is provided which is capable of automatically monitoring the eye fixation without the ophthalmologist being required to initialize the eye...
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4846567 |
Retinal area response mapping using simultaneous multi-area stimulation with binary sequences and objective response analysis
Visual disorders of the retina are identified and assessed by stimulating the eye(s) with an array of controllable optical elements wherein the controllable elements are activated with M-sequences....
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4824237 |
Vision and hand/eye coordination exercising and testing machine
A vision and hand/eye coordination testing machine includes a front panel sub-divided into a grid-like array. Each array position is either a lamp position or a dummy position, the two being...
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4818097 |
Ocular-pursuit measuring
A unique technical process which must be taught is provided for quickly, simply, objectively and accurately measuring an individual's ocular tracking ability. The technique includes a process for...
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4818091 |
System and method of detecting visual field defects
A method and system are provided for detecting and monitoring the treatment of eye disease by determining the presence of visual field defects. The method utilizes eyeglasses having a pair of...
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H000574 |
Subject operated pupilometer
An instrument for the self-examination of the eye of a subject is described which comprises a housing including a controllable light source for selectively illuminating the eye, an optical system...
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4798456 |
Method for evaluating metamorphopsia
A hyperacuity testing method is suitably programmed for quantitatively measuring metamorphopsia of a patient's visual system, detecting and measuring metamorphopsia behind a media opacity, such as...
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4737024 |
Perimetric method and apparatus
The present invention provides an oculo-perimetric device for use in measuring the field of vision of a subject and comprises an extended area visual target 1 having a large plurality of generally...
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4685784 |
Method for controlling fixation of a patient's eye during perimeter measurements
A method for controlling the fixation of the eye of a patient during measuring of the sensitivity of the retina of the eye using a perimeter tester having a plurality of spaced testing light points...
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4634243 |
Glaucoma detection utilizing pattern discrimination test
The present invention psychophysically detects earliest signs of loss of vision due to nerve loss in glaucoma and ocular hypertension. An instrument employs a dynamic random dot background field...
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H000185 |
Respirator perimetry device
A device for measuring the field of vision for a person wearing a mask indes a mask support to which the mask can be clamped and which is horizontally movable for aligning one of the subject's eyes...
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4619506 |
Random pattern tracking acceleration tolerance tester
A G force acceleration effects monitoring apparatus involving a pair of LED or other visual stimulus arrays, one randomly patterned by an electronic driving apparatus and one patterned by the...
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4558933 |
Method and apparatus for uniform background in visual field testing devices
A method and apparatus for providing a uniform testing field for visual field mapping includes a concave viewing screen and a plurality of selectively illuminated test points spaced thereabout. A...
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4490023 |
Arrangement for test mark positioning in spheric perimeters
The invention relates to an arrangement for test mark positioning in spheric perimeters particularly for use in ophthalmological examinations. A semi-spherical perimeter screen has a central...
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4429961 |
Visual field testing device
An improved visual field testing device is disclosed. The device is a modification of an automatic Goldmann-type perimeter device which permits operation by the physician or technician.
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4421392 |
Apparatus for detecting visual field defects of the eye
A perimeter for testing visual field light-sensitivity presents a moving spot or a set of fixed spots visually to a patient. The spot or spots have ill-defined edges so that the effect of visual...
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4421393 |
Visual field perimeter and psychomotor tracking performance measuring apparatus
A system for evaluating tolerance to high acceleration as a function of visual field perimeter and psychomotor tracking ability. A semicircular array of light-emitting diodes (LED's) subtend the...
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4420229 |
Ophthalmic instruments
A Friedmann analyser wtih an arrangement of fixed and rotatable shutters for displaying different patterns of light spots to a subject has a screen for displaying to the operator each light spot...
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4392725 |
Device for blind spot delineation
A self-contained, solid state device, with no moving parts, that determines visual field defects is disclosed. The device employs a tangent screen containing LEDs which are illuminated in sequence...
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4349250 |
Process and apparatus for the dynamic or static perimetry of the human eye
A process and apparatus for dynamic or static perimetry of the human eye wherein topographical measuring threshold values of eye sensitivity for the eye being tested are obtained and are...
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4346968 |
Wall mounted visual field testing system
A visual field testing unit having a thin, light-weight screen adapted for mounting on an inside building wall and having a plurality of individually energizable substantially point light sources...
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4279478 |
Eye examining instrument
A fixation object for maintaining the direction of the line of vision of an eye to be examined and a bright test object movable in a plane conjugate with the fundus of the eye with respect to an...
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4059348 |
Objective plotting of visual fields by eye movement monitoring
An apparatus for measuring and evaluating a subject's visual field presents a target image, consisting of a spot of light, at a series of selected locations within the subject's visual field. Means...
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4012128 |
Method and apparatus for determining visual latency
Apparatus and methods for testing temporal resolution of vision in a human subject are disclosed in which a light source is repetitively energized to produce pairs of visual stimuli, and the time...
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3982828 |
Eye testing apparatus
Eye testing apparatus including a control unit having a control display panel having a number of distributed electrical lights adapted to be illuminated; and electrical connection means for...
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3936164 |
Instruments for measuring visual fields
Instruments for measuring visual fields including a portable perimeter having a handle by which it can be held by the subject being tested. In a preferred embodiment, the perimeter includes a...
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3902795 |
Visual-field testing
Visual-field testing is effected in a binocular manner by use of a polarized fixation target representation and a non-polarized movable target representation viewed through eye pieces incorporating...
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3883234 |
Computer controlled apparatus for automatic visual field examination
An illustrative embodiment of the present invention includes apparatus for determining the threshold value of visual stimuli presented at selected locations in the visual field of a subject....
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3883235 |
Automatic visual field examination including fixation monitoring compensation
An illustrative embodiment of the present invention includes method and apparatus for determining locations in a test field at which a subject is able to perceive visual stimuli. The stimuli are...
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3827789 |
MONITORING DEVICES
A method and apparatus for measuring a subject's visual field by presenting a target consisting of a spot of light at a series of selected locations within the subject's visual field and monitoring...
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3746433 |
A DEVICE FOR MEASUREMENT OF A VISUAL FIELD OF TWO EYES
Measurement of a visual field of two eyes comprising measuring two eye visual field by means of a spherical surface passing through respective nodal points of two eyes and a point of fixation in a...
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