A computerized method for administering a low luminance dysfunction test, comprising the steps of: (a) displaying a first character in a color at a first acuity level against a display having a luminance level; (b) receiving a first input signal from a patient via an input device, where the input signal is indicative of whether the patient recognizes the first character displayed in the first acuity level; (c) displaying a second character in the color at a second acuity level against the display having the luminance level; (d) receiving a second input signal from the patient via the input device, where the input signal is indicative of whether the patient recognizes the second character displayed at the second acuity level; and, (e) calculating a score based on the first and second input signals.

A computerized method for administering a low luminance dysfunction test, comprising the steps of: (a) displaying a first character in a color at a first acuity level against a display having a luminance level; (b) receiving a first input signal from a patient via an input device, where the input signal is indicative of whether the patient recognizes the first character displayed in the first acuity level; (c) displaying a second character in the color at a second acuity level against the display having the luminance level; (d) receiving a second input signal from the patient via the input device, where the input signal is indicative of whether the patient recognizes the second character displayed at the second acuity level; and, (e) calculating a score based on the first and second input signals.

A method of identifying individuals impaired by a psychoactive substance such as cannabis. The method includes presenting monocularly to a subject being tested; to each eye separately, a sinusoidal grating pattern of fixed spatial frequency with achromatic contrast or color contrast between grating stripes being temporally alternately modulated at a temporal frequency that ranges between 10 Hz and 60 Hz with a pattern of the contrast being such that the subject being tested can see a frequency doubling in the grating pattern.

A method of identifying individuals impaired by a psychoactive substance such as cannabis. The method includes presenting monocularly to a subject being tested; to each eye separately, a sinusoidal grating pattern of fixed spatial frequency with achromatic contrast or color contrast between grating stripes being temporally alternately modulated at a temporal frequency that ranges between 10 Hz and 60 Hz with a pattern of the contrast being such that the subject being tested can see a frequency doubling in the grating pattern.

An electronic device may include a display and control circuitry that operates the display. The control circuitry may be configured to daltonize input images to produce daltonized output images that allow a user with color vision deficiency to see a range of detail that the user would otherwise miss. The daltonization algorithm may be specific to the type and severity of color vision deficiency that the user has. The control circuitry may conduct a color vision assessment using the display. The color vision assessment may include a sequence of test images that are each displayed for a predetermined period of time before moving to the next test image in the sequence. Each test image may include a color patch on a neutral background. A predetermined number of severity levels for each type of color vision deficiency may be tested during the color vision assessment.

Illumination can be evaluated for patient using a system including a housing, an adjustable light source mechanically coupled to the housing and configured to illuminate an object for viewing by the patient on an axis substantially perpendicular to a surface of the object. A user-adjustable input coupled to the adjustable light source is to obtain information from a user indicative of a calibrated illuminance and a color property to be provided by the adjustable light source including providing a range of adjustable illuminance and color properties selectable by the user. The adjustable light source can be configured to provide light having an illuminance in excess of 300 lux, and the housing can be configured to provide a first specified distance between the adjustable light source and the object for viewing and to obstruct viewing of the light source directly by the patient.

A dyschromatopsia deciding method and apparatus is provided. The apparatus includes an I/O interface configured to receive an input for a program, a memory configured to store the input for the program and a processing result of the input, and a processor configured to execute the program, wherein the processor is configured to provide first CAPTCHA information for distinguishing between a person and a machine together with second CAPTCHA information for deciding dyschromatopsia, receive first CAPTCHA input information corresponding to the first CAPTCHA information and second CAPTCHA input information corresponding to the second CAPTCHA information together with authentication information, authenticate a user based on the first CAPTCHA input information, decide dyschromatopsia of the user based on the second CAPTCHA input information, and store a decision result of the dyschromatopsia in response to a decision that the user has the dyschromatopsia.

A system for ocular assistance is disclosed. The plurality of subsystem includes an ocular condition registration subsystem, configured to register one or more users. The plurality of subsystem includes an ocular calibration subsystem, configured to determine a plurality of ocular settings. The plurality of subsystem includes a device configuration identification subsystem, configured to determine a plurality of device settings for each of one or more device associated with the registered one or more users. The plurality of subsystem includes a screen customization subsystem, configured to determine values corresponding to the plurality of ocular settings based on a pre-stored look up table and determined plurality of device settings. The screen customization subsystem modifies current values corresponding to the plurality of ocular settings to the determined values. The system modifies or rectifies the screen images or texts for suffering users.

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.

An electroactive device may include (1) an electroactive polymer element having a first surface and a second surface opposing the first surface, (2) a primary electrode abutting the first surface, and (3) a secondary electrode abutting the second surface. The electroactive polymer element may be transformed from an initial state to a deformed state and may achieve substantially uniform strain by the application of an electrostatic field produced by a potential difference between the electrodes. Various other devices, systems, and methods are also disclosed.