A system for replicating a standardized visual acuity test, such as the 20′ Snellen test may comprise a binocular viewer attached to a smartphone. A binocular viewer may comprise a housing comprising a pair tube covers having voids allowing for viewing through a pair of lens tubes with each lens tube in visual communication with a second lens a first lens an aperture and a front cover. The optical systems use an artful combination of front and back lens surfaces, demagnification and other systems to faithfully replicate the sight lines perceived by a user of a traditional 20′ test. The system also allows for the incorporation of other tests conducted with both eyes including Color Sensitivity and Contrast, furthermore by placing a deformable, tunable lens between the second lens and the eye the device serves as an ophthalmic refractometer, allowing a Spherical Equivalent refraction estimate for each eye.

A method for manufacturing an optical device, includes obtaining a plurality of test images in each of which spectral intensities of a first color component, a second color component and a third color component are separately changeable, changing the spectral intensity of the first color component in at least a first test image, changing the spectral intensity of the second color component in at least a second test image, obtaining a spectral intensity Rs of the first color component and a spectral intensity Gs of the second color component satisfying a particular test condition when a subject is looking at the first and second test images, and manufacturing the optical device including an optical element configured to adjust spectral intensities of the first color component and the second color component, in light transmitted through the optical element, based on the spectral intensities Rs and Gs.

The present invention relates to a test system for assessing color vision variability of test persons (7). The test system comprises at least two test carriers (1), wherein each of the at least two test carriers (1) is provided with a two-dimensional pattern (4) including a background (2) and a plurality of samples (3). The plurality of samples (3) and the background (2) of each one of the at least two test carriers (1) are made of at least two different dyestuff combinations representing metameric colors. The samples (3) and/or the background (2) show color scaling in at least two directions such that each one of the at least two test carriers (1) is configured to provide that a test person (7) can select a spot (PIS.sub.C) from the two-dimensional pattern (4) where the metameric colors of the samples (3) and the background (2) match best. The system further comprises a test illuminant unit (5) configured to provide light for the color vision variability assessment, the light having a specific spectral power distribution. The system further comprises a processing unit (6) configured to predict a color matching function and/or to determine a congenital and/or acquired color vision deficiency of the test person (7) by calculating a variation of the spot (PIS.sub.C) selected by the test person (7) as compared to a spot (PIS.sub.B) computed by the processing unit (6) based on data of a predefined standard observer considering the specific spectral power distribution of the light of the test illuminant unit (5).

Disclosed is a control device querying a preset data set to obtain color vision sensitivity information corresponding to acquired identity information of a user of the augmented reality device; the control device judging whether the user is a color recognition disorder patient according to obtained color vision sensitivity information; the control device acquiring a personalized color display mode corresponding to the color vision sensitivity information as a target color display mode when the user is judged as a color recognition disorder patient; and the control device providing the augmented reality device with the target color display mode so that the augmented reality device employs the target color display mode to display an image.

A handheld smart phone includes programming for performing various vision-related tests. The smart phone includes a touch sensitive screen, microphone, speaker, other sensors, processor and persistent storage for execution of software, multiple communications network interfaces and other device interfaces. The display delivers vision tests and, together with the speaker, related audio instructions to a user. The user interacts with the vision tests by using tactile and audio commands to the device screen and microphone. The test results are assembled into a report that can be transmitted to persons of the user's choice, such as a care provider. The capability is included for transmitting results to the remainder of the system for storage, analysis, events, alerts for medical personnel's user treatment and multiple user population analysis.

A system and method for conducting automated vision tests and associated training using artificial intelligence processing on an extended reality (XR) platform includes: an extended reality headset display device configured to be worn by a user and operated by the user without direct medical professional assistance; a computing device communicatively coupled to the extended reality headset display device; and a vision testing and training module configured to execute on the computing device, the vision testing module when executed: displays at least one test data set comprising a plurality of vision tests to a user; detects a plurality of user responses to the tests; records the plurality of user responses; processes the plurality of user responses; and stores the plurality of user responses to compare with a plurality of other recorded user data to determine standards based on user qualifications.

A system for determining a rounded value of an optical feature of an ophthalmic lens including determining a first test value and a first variation increment, performing a first trial of said subjective test wherein two first different optical situations are determined based on at least the first test value, determining a second test value based on the first test value, on the first variation increment and on the result of the first trial, performing a second trial of said subjective test wherein two second different optical situations are determined based on at least the second test value, determining an intermediary value based on the result of the first trial and on the result of the second trial, and determining said rounded value by rounding said intermediary value to a reference value, said rounding modifying the dioptric correction of said ophthalmic lens by less than a predetermined basic dioptric value.

Evaluation of the perception of colors by mammals with a view to obtaining a characteristic biomarker of each tested subject takes advantage of the slow pupillary oscillatory response to generate an objective neurological signature of this perception of colors. A method based on pupil frequency tagging is used at a tagging frequency F.sub.tag adapted to the pupil response speed. A dynamic two-color stimulus is displayed, this stimulus comprising a two-color pattern the colors of which are inverted at the frequency F.sub.tag, one of the colors gradually varying in a range of possible values. From the pupillary response, a signal representative of the oscillation power of the pupil is generated. The minimum of this signal corresponds to the relative iso-luminance of the tested pair of colors.

According to some embodiments, a system and method of testing color vision is disclosed. The system and method of testing color vision comprises initiating a color vision test on a first computing device, linking a program on a second computing device with the color vision test on the first computing device, determining a distance from the first computing device using the second computing device, and transmitting answers to the color vision test using the second computing device wherein the questions associated with the color vision test are displayed on the first computing device.

A filter test kit for low vision is provided and may include a plurality of test frames. A test frame may include two sockets, a pair of optical lens tint components disposed in the sockets, a bridge connecting the sockets; and a tactile frame identifier. The pair of optical lens tint components for each frame is different from the pair of optical lens tint components of each other frame. Also, the tactile frame identifier for each frame is different from the tactile frame identifier for each other frame.