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7494222 |
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...
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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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7475988 |
Perimeter
Perimeter has input means for inputting identification data of an examinee and a kind of perimetry to be conducted, means for judging whether or not the examinee has already received the perimetry,...
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7380941 |
Device and method for assisting development of an infant's visual acuity and for transferring a mother's scent to an infantile environment
A device for assisting the development of an infant's visual acuity and for transferring the mother's scent to an infantile environment. Smooth and supple fabric contacts an area of the mother's...
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7367674 |
Perimeter and a method for operating a perimeter
The invention relates to a perimeter and a method for operating a perimeter during a field of vision examination, whereby light stimuli in the field of vision of the person to be tested are...
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7309129 |
Perimeter
A perimeter for examining a visual field of an eye of a patient, includes: a presentation unit, which presents an examination target at each of various positions around an eye fixation point to...
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7309128 |
Automated stereocampimeter and related method for improved measurement of the visual field
In a method for testing the visual field of a patient especially the central visual field, stereoscopic or binocularly displaced fixation images are presented under computer control to the...
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7278742 |
Systems and apparatus for assessment of visual field functions
Systems, apparatus and associated methods for use in the assessment of visual field functions. In particular, perimetry testing and visual evoked potential (VEP) testing is performed by a visual...
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7275830 |
Methods devices and systems for detecting eye disease
Methods and systems for performing an eye test and for detecting eye disease. A test pattern is presented to an individual. The individual fixates an eye on a fixation target. The test pattern is...
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7244027 |
Perimeter
A perimeter for examining a visual field condition of an examinee's eye, includes: a target presenting unit a response unit brain activity detecting unit which detects an activity condition of a...
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7220000 |
Methods, devices and systems for assessing eye disease
Methods and devices for detecting eye disease and for assessing the clinical stage of an eye disease in an individual. The methods include projecting test patterns onto the retina of a tested eye...
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7155393 |
Method for establishing fixation employing speech recognition
The present invention provides a method for establishing fixation during computerized visual field perimetry, requiring the subject to verbally identify the symbol employed as fixation targets as...
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6890077 |
Method and apparatus for high resolution video image display
One aspect of the present invention is a method that includes displaying a first portion of an image in a peripheral vision field of a person; displaying a second portion of the image at a higher...
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6863399 |
Flash recovery timer and warning device, with recorder
A flash recovery timer and warning device is a hand-held electronic device using a bright flash to create a temporary glare-type vision blur to the eye to be tested and a target and timer to...
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6848789 |
System, method and article of manufacture to determine and communicate optical lens sizing and prescription information
The proposed invention calculates the circumference of an optical lens taking into consideration external variations in lens size and shape. The invention, utilizing a uniquely designed optical...
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6736511 |
Virtual reality peripheral vision scotoma screening
The invention utilizes a virtual reality display to present a random noise stimulus to a patient. Using an input device a patient indicates the location of disturbances in the random noise display....
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6685321 |
Perimeter
A perimeter has an optical projection system that projects a target spot on the inside surface of a visual field dome. The position at which the target spot is projected is controlled...
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6623118 |
Stimulus and method for measuring the field of vision of the human eye
A device and method for providing a stimulus to the measurement of the field of vision of the human eye. The stimulus is presented at predetermined test sites in a region of the background of a...
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6612700 |
Device for testing visual functions of the human eye
A perimeter for visual examination has a head restraint and a control panel. Located on a unit base is an optical system, in which there is an optical examination system with an eyepiece. The...
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6402320 |
Methods and apparatus for measuring visual acuity in preverbal children
An automated method of measuring visual acuity utilizing an electronic visual display comprises the steps of: (a) presenting a fixation target for attracting a subject's attention on said...
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6293675 |
Macular stressmeter
A portable, integrated, hand-held visual examination apparatus for conducting a photostress test on the retina of the human eye. The apparatus includes, within the housing, a timing mechanism, a...
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6086206 |
Analysis method for enhancing and extracting second order nonlinear response components of the multi-area electroretinogram
Two new modes of stimulation and analysis are provided for the enhancement of local and lateral nonlinear interactions in the multi-area electroretinogram. In both modes the stimulation consists of...
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6074064 |
Apparatus for measuring limits of a peripheral Visual Field
An apparatus for measuring the limits of a visual peripheral field includes a gaze-fixing mirror containing a dot for fixing the gaze of an examinee, a backing to which the mirror is fastened, and...
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6033076 |
Visual field testing via telemedicine
A method and an apparatus for the performance and autointerpretation via the Internet, or other telemetric vehicle, of the visual function test parameters obtained during interactive visual field...
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6027217 |
Automated visual function testing via telemedicine
A method and an apparatus for utilizing a central neural network and a central data bank to perform automatic interpretation of the visual function test parameters obtained in a plurality of visual...
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5920375 |
Process for measuring the visual field recognizable by the eye of a patient
A perimetric structure and a testing process having a digitalized camera mechanism for storing the image and evaluating with a visual field testing device, in which the individual testing points of...
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5910834 |
Color on color visual field testing method and apparatus
A method and apparatus are disclosed for using virtual reality to present a test stimulus of a first color superimposed on a background of a second color, for testing and quantifying visual...
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5898474 |
Visual field testing method and apparatus
A method and apparatus are disclosed for using virtual reality for testing and quantifying visual information from the eye, the visual pathways, and the brain. Headgear configuration allows the...
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5883692 |
Visual field measurement apparatus
A system is provided for measuring the color visual fields of a patient's eyes, and includes a viewing area for the patient to direct one of their eyes toward. The viewing area also has a viewing...
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5870169 |
Human eye visual field testing device
A device for examining the visual field of the human eye which includes a cup-shaped screen, onto the base of which one or several test marks are projected, and usable for both kinetic and also...
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5864385 |
Method of determining the perimeter of the visual field of the human eye
A multiplicity of test sites determined by coordinates are stipulated in the visual field. This is done in such a way that at least one further test site is present within a specific circle around...
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5822037 |
Automated dark adaptometer
The present invention modifies the Goldmann-Weeker's dark adaptometer so that all testing may be done automatically and analysis of the data may be completed in a rapid manner and further varied....
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5812239 |
Method of and arrangement for the enhancement of vision and/or hand-eye coordination
An arrangement for enhancing vision and/or hand-eye coordination includes a foldable or bendable sheet. The sheet carries a circular array of annular pads, and a light-emitting diode fits in the...
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5805271 |
Refractively corrected, wavelength selective, transparent occluder for a non-tested eye for visual field testing
An embodiment of the present invention is a refractively corrected, wavelength selective, transparent visual field test occluder for a non-tested eye used in a visual field testing apparatus which...
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5801810 |
Method and apparatus for testing visual attention capabilities of a subject
A system for assessing subjects for inadequate visual attention capabilities presents a sequence of display screens to the subject on a conventional computer monitor. The display screens include a...
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5737060 |
Visual field perimetry using virtual reality glasses
Visual field perimetry may be performed using virtual reality glasses, a computer, a printer and an external mouse. The advantages of such a system are price, portability and patient comfort....
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5717481 |
Perimetric measurement apparatus for measuring characteristics of X ganglion cells
An apparatus for measuring a visual field of a patient, especially characteristics of X ganglion cells, displays a series of targets to a patient. A ramp stimulus is used to measure characteristics...
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5598235 |
Method and an apparatus for testing a subject's response to visual stimuli
In a method of testing a subject's response to visual stimuli, a plurality of visual stimuli are presented to the subject by means of a perimeter. After each stimulus presentation, the perimeter...
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5565949 |
Visual field perimetry on a small computer screen
A moving and changing fixation point allows visual field perimetry to be performed on the small screen of a laptop computer. A moving fixation point increases the effective area of the screen. A...
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5490098 |
Automated system and method for determining pupillary threshold response
An automated system and method for determining pupillary threshold response is described. The system achieves the determination of pupillary threshold levels through the measurement of...
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5461436 |
Color field test with occlusion of non-tested eye
In a color field test where the field background is of a first color--preferably yellow--and the illuminating spot is of a second and different color--preferably blue, a translucent occluder is...
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5461435 |
Method and an apparatus for checking the thresholds of a subject's perception of visual stimuli
In a method of checking the threshold values of a subject's perception of visual stimuli, for each one of a selection of test series, the estimated error of a threshold value estimate of the test...
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5459536 |
Apparatus and method for automated perimetry
An apparatus and method for automated perimetry. A patient interface is adjustable with respect to a previously positioned patient rather than requiring the patient to position him or herself with...
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5412561 |
Method of analysis of serial visual fields
A method of analyzing serial automated visual field data calculates a total field vector of the threshold sensitivity of points in a visual field and compares the total field vector with a...
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5343261 |
Device for inducing saccadic eye movement
A device for inducing saccadic eye movement in a subject utilizing a source of power which activates a multiplicity of visual signaling elements. The visual signaling elements are mounted in a...
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5323194 |
Perimeter with non spherical bowl
A perimeter is disclosed in which the projection surface of the bowl includes a hemispherical section bounded by a cylindrical perimeter to impart to the interior projection surface of the...
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5302981 |
Method and apparatus to correct vertical and lateral double vision
A method for prescribing a prism factor for eyeglasses for substantially correcting vertical and/or horizontal diplopia or double vision problems, which includes having a patient positioned for...
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5293532 |
Device and method for positioning and relaxing accommodation of the eye
Apparatus and methods for relaxing accommodation of an eye undergoing examination or other optical or medical procedures while concurrently permitting and facilitating positioning of the subject...
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5270750 |
Apparatus and method for finding of scotomas in the eye of a person tested
The invention relates to an apparatus and a method for finding blind spots in the eye of a person tested. In examinations carried out to date, it was necessary to scan the entire image field of the...
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5235360 |
Automatic perimeter
The present invention discloses an automatic perimeter capable of easily adding or deleting the inspecting points. The present invention includes: target mark exhibiting means exhibiting a target...
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