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.

Disclosed herein is a rodent and human behavioral test for evaluating visual dysfunctions associated with the retinal changes in Alzheimer disease progression. In one example, the inventors developed a maze that tests rodent's ability to identify (1) specific contrasts, (2) specific colors, (3) certain items in the visual field, and (4) other ‘non-typical’ peripheral and night vision functions associated with AD. For instance, the inventors developed a maze the tests the rodents ability to avoid certain colors or contrasts gradients. The maze may include certain rooms with specific visual markers (e.g., colors, contrasts, objects or other visual features) that also contain shock plates.

In examining a patient for progression of glaucoma, a perimeter capable of appropriately assessing visual field progression in a short period of time, therefore lessening the physical burden of testing on the examinee.

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 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.

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.

Embodiments test a subject's vision. A polarization arrangement polarizes incident light and rotates an angle of polarization applied to the incident light about an axis substantially collinear with a path of the light. An optical component directs light onto the polarization arrangement and produces light having a selected degree of polarization and having a rotating angle of polarization for observation by the subject The subject may be able to observe the visual phenomenon known as Haidinger's brushes and due to the rotation of the angle of polarization the eye's tendency to adapt away the phenomenon is counteracted, so that the effect persists and a more reliable testing of the subject can be carried out. Testing the subject's ability to perceive the phenomenon at multiple selectable degrees of polarization enables an assessment of the subject's eyes, and an estimate of macular pigment optical density and susceptibility to age-related macular degeneration.

Embodiments test a subject's vision. A polarization arrangement polarizes incident light and rotates an angle of polarization applied to the incident light about an axis substantially collinear with a path of the light. An optical component directs light onto the polarization arrangement and produces light having a selected degree of polarization and having a rotating angle of polarization for observation by the subject The subject may be able to observe the visual phenomenon known as Haidinger's brushes and due to the rotation of the angle of polarization the eye's tendency to adapt away the phenomenon is counteracted, so that the effect persists and a more reliable testing of the subject can be carried out. Testing the subject's ability to perceive the phenomenon at multiple selectable degrees of polarization enables an assessment of the subject's eyes, and an estimate of macular pigment optical density and susceptibility to age-related macular degeneration.

A method and an apparatus for testing night vision are disclosed. At least one visual mark is presented to a test person having an open pupil from a distance of several meters. The visual mark is configured as a light point, and a visual impression of the test person is determined by means of the visual mark. The apparatus comprises means for opening a pupil of a test person, in particular a darkened room. An examination position for the test person and a presentation apparatus for visual marks arranged at a distance of several meters from the examination position are also provided. The presentation apparatus comprises at least one point-shaped light source. A light beam thereof is directed towards the examination position. Means are provided for determining a visual impression of the test person with the help of the visual marks.

A method for evaluating retinal function and testing the visual field of a patient by monitoring how the patient tracks a target image on a display that comprises displaying the target image on the display such that it is located at a first position on the display and visible to the patient. The process continues by identifying what portion of the display the patient is looking at, selecting a location of the patient's retina to test, and calculating, based at least in part on what portion of the display the patient is looking at, a second position on the display corresponding to the selected location of the patient's retina. The target image is displayed at the second position on the display and the process identifies how many eye movements the patient made to look at the target at the second position. Based at least in part on the number of eye movements, the process determines whether the patient was able to see the target at the second position.