A visual stimulus for a set of contrast cards is provided which comprises a hollow outer circle, opposing and identical first and second arc segment within the outer circle which are symmetrical about the vertical diameter of the outer circle, a first filled-in circle and a second filled-in circle being identical in diameter to the first filled-in circle, each residing on opposite ends of the horizontal diameter of the outer circle and each being equidistant from the center of the outer circle, a filled-in center element having a rotational center on the center of the outer circle, the center element being symmetrical about both the horizontal and vertical diameter of the outer circle.

A visual function evaluation is performed using a sequence of interactions with a mobile device. A patient user may perform a variety of visual tests using the mobile device. The mobile device transmits the test results to a remote server implementing analysis of the visual function results using network service. The network service receives the test results, processes the results, and provides the processed results to a healthcare provider. The processed results may include trends of the user's visual function test performance. The healthcare provider, such as a physician, may optimize and administer treatment based on the data. Early detection of changes in visual function can enable the healthcare provider to individualize treatment, helping to prevent vision loss while minimizing visits to the office, discomfort, and expense.

Provided herein are devices, systems, methods, apparatuses, and computer program products for determining a visual acuity of a reader. The device includes a display adapted to present a first line of text to the reader and an input device adapted to receive signals corresponding to the first line of text. The device further includes a processor that is adapted to determine a reading score associated with the first line of text, generate an acuity parameter based on the reading score and the first readability vector, and determine the visual acuity of the reader based on the acuity parameter and a reference acuity parameter.

The invention concerns a couple of test images, for a binocular refraction method, that comprises: —a first test image (21) to be provided to a first eye of a subject, comprising a central image (21c) surrounded by a first peripheral image (21p), this central image comprising at least one optotype (21o); and - a second test image (22) to be provided to a second eye of the subject, comprising a central image (22c) surrounded by a second peripheral image (22p) substantially identical to the first peripheral image, this central image being deprived of optotypes, or comprising only optotypes (22o) with a low contrast or sharpness level. The invention concerns also an associated binocular refraction method and refraction instrument, and an associated computer program.

Disclosed herein are methods, devices, and systems for the enhanced monitoring of visual function via telemedicine to detect early onset of changes and abnormalities associated with disease. The systems include a cloud environment or neural network communicating various tests and images to a client device in which a user/patient is properly positioned to view a display of the client device, receive stimuli, and provide patient input which is evaluated in terms of timing and substance to generate a contrast-sensitivity map of a visual function for the patient. Various ocular tests are described for implementation in a new home-based computer environment rather than using expensive and specific medical equipment in a doctor's office.

A system and method are provided for detecting and continuously monitoring Pupillary Light Reflex responses and neurological conditions to determine probability and degree of impairment to a user due to intoxication or neurological disorder. In one embodiment, the system includes a camera in a housing affixed to an article worn on the head of a user operable to enable the camera to view at least one eye of the user, a portable video capture device (VCD) wired or wirelessly coupled, or integrated to the camera to receive video therefrom, and software executed by a processor in the VCD. The software includes modules to locate and measure a change in a feature of the eye, extract data therefrom and predict a degree of impairment of the user, and output the probability and degree of impairment to the user and/or to a third party monitor. Other embodiments are also disclosed.

A head-mounted video camera, a processor, and a display are integrated within the head-mounted device worn by the user. The head-mounted device is configured to capture images of the environment and subject those images to specialized processing in order to diagnose and/or make up for deficiencies in the user's eyesight. Different modes of operating the device are provided that enable the user to configure the device for a specific application. The modes of operation include at least an assistive mode, a diagnostic mode, and a therapeutic mode. Each mode of operation may include further options, where each option is dedicated to a specific processing approach specific to a condition that may afflict the user, ranging from contrast sensitivity issues to strabismus.

A system for the remote management of head mounted vision assist devices used by patients, is provided. The system includes head mounted vision assist devices located at various patient locations, at least one computing device used by a clinician supervising the usage of the vision assist devices by the patients, and a server communicatively coupled with each of the vision assist devices and the computing device used by the clinician. The server executes stored instructions to enable the clinician to remotely monitor the results of one or more diagnostic tests conducted by a patient at predefined time intervals and monitor a display of a head mounted vision assist device being used by the patient by mirroring the patient's display on the clinician's computing device. The server executes stored instructions that also enable the clinician to diagnose the patient based on at least one of the test results and the mirrored display and provide one or more of: prescription and therapy to treat the patient based on the diagnosis.

Methods, apparatus, and systems for performing an ophthalmic diagnostic test are disclosed. In one aspect, a head-wearable device for administering an ophthalmic test to a subject can comprise a head-wearable frame for mounting the device onto the subject's head, and a light seal configured for coupling to the frame so as to isolate at least one eye of the subject from ambient light when the device is worn by the subject.

In some embodiments, initial feedback indicating threshold characteristics (under which a user sees initial stimuli presented on a user interface) may be provided to a prediction model, and a set of predicted characteristics (for a set of locations of the user interface) and a set of confidence scores associated with the set of locations may be obtained via the prediction model. Based on the set of confidence scores, one or more locations may be selected to be tested during a visual test presentation. As an example, the locations may be selected over one or more other locations of the set of locations based on the set of confidence scores. Based on predicted characteristics associated with the selected locations, stimuli may be presented at the selected locations during the visual test presentation. Visual defect information for the user may be generated based on feedback from the visual test presentation.