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.

A color blindness-simulating digital image is generated from an original digital image. Wireframe versions of the original digital image and the color blindness-simulating digital image can be generated. A comparison digital image between the color blindness-simulating digital image and the original digital image is generated, such as by comparing the wireframe versions of the original digital image and the color blindness-simulating digital image to one another. The comparison digital image is indicative of the extent to which a color-blind person is unable to distinguish features within the original digital image.

The present disclosure provides an improved method for photobleaching an eye of a subject. The disclosed method may be used in a number of psychophysical test methods, including, but not limited to, measurement of dark adaptation. The improved method for photobleaching involves at least one of the following improvements: (i) the use of a bleaching light emitting a particular wavelength of light or a tailored spectrum of wavelengths; (ii) restricting or otherwise spatially tailoring the region of the retina that is subject to photobleaching; and (iii) utilizing a bleaching light having an intensity that is at or below the intensity of ambient daylight. The present disclosure additionally provides a combination of a photobleaching light and an apparatus to administer a psychophysical test suitable for use in practicing the disclosed methods.

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 method of analyzing the degree of abnormality in the eye is provided, and in the method at least some portion of the functional evaluation of the eye's visual function is performed by presenting visual stimuli in mesopic conditions. A visual function examination device is provided, and in the device the spectral composition of the stimuli is generated by a projection or display device, and the said projection or display device can be adjusted so that individual receptor types can be excited by the said stimuli.

A visual function examination device includes a response information acquisition unit configured to acquire response information indicating a response about glare felt by a subject to a visual target based on a glare illusion and a glare index calculation unit configured to calculate an index for the glare felt by the subject on the basis of the response information acquired by the response information acquisition unit.

A visual function examination device includes a response information acquisition unit configured to acquire response information indicating a response about glare felt by a subject to a visual target based on a glare illusion and a glare index calculation unit configured to calculate an index for the glare felt by the subject on the basis of the response information acquired by the response information acquisition unit.

A method for adjusting display colors, an electronic device, and a storage medium are provided. The method includes: in response to a selection operation acting on color blocks, the color blocks are filled to controls to be filled; and upon detecting that the color blocks are all filled to the controls to be filed, the display colors are adjusted on the basis of a relationship between arrangement orders and preset arrangement orders. By adjusting the display colors of the electronic device according to a test result, personalization of the display color is achieved, and the user experience is improved.

Configurations are disclosed for a health system to be used in various healthcare applications, e.g., for patient diagnostics, monitoring, and/or therapy. The health system may comprise a light generation module to transmit light or an image to a user, one or more sensors to detect a physiological parameter of the user's body, including their eyes, and processing circuitry to analyze an input received in response to the presented images to determine one or more health conditions or defects.

Utilizing color light for focal stimulation of the macula for photobleaching and dark adaptation provides a means to isolate the recovery ability of different types of cones. Having the ability of selectively analyzing the recovery of different types of cones opens the opportunity to determine the effect of disease on cone type for diagnosis and monitoring of disease severity. An endpoint target with a noticeable difference between the center of the target and the peripheral ring of the target at endpoint is described.