The present invention provides a reading test to measure vision loss. In one embodiment, the vision loss is due to disease progression. The tests are useful in evaluating the effects of intervention in vision deterioration. The tests are non-invasive, simple, quick, sensitive, reproducible, and easy to administer. The tests measure the subject's reading speed and accuracy under defined conditions of illumination and contrast. The results of these tests may be used to determine if treatment of a disease should be initiated, terminated, altered, or remain unchanged.

The present invention provides a reading test to measure vision loss. In one embodiment, the vision loss is due to disease progression. The tests are useful in evaluating the effects of intervention in vision deterioration. The tests are non-invasive, simple, quick, sensitive, reproducible, and easy to administer. The tests measure the subject's reading speed and accuracy under defined conditions of illumination and contrast. The results of these tests may be used to determine if treatment of a disease should be initiated, terminated, altered, or remain unchanged.

Methods for presenting dynamic images to a user, configured to evaluate and/or improve the user's foveal and/or peripheral visual acuity. Dynamic computer games are popular, but the moving images of prior art dynamic computer games are not suitable for improving visual acuity. To overcome this restriction, embodiments of the present invention analyze user's responses to the moving images to determine a change in the user's visual acuity, and responsively adjust parameters of the moving images, such as speed, direction of motion, orientation, crowding, contrast, and spatial frequency, in order to improve the user's visual acuity.

Methods for presenting dynamic images to a user, configured to evaluate and/or improve the user's foveal and/or peripheral visual acuity. Dynamic computer games are popular, but the moving images of prior art dynamic computer games are not suitable for improving visual acuity. To overcome this restriction, embodiments of the present invention analyze user's responses to the moving images to determine a change in the user's visual acuity, and responsively adjust parameters of the moving images, such as speed, direction of motion, orientation, crowding, contrast, and spatial frequency, in order to improve the user's visual acuity.

A method, a computer program, and a device for determining at least one astigmatic effect of at least one eye of a person are disclosed, as well as a related method for producing at least one spectacle lens for the at least one eye of the person. The method for determining the astigmatic effect includes: a) displaying an image to an eye of the person, the image including a line with a plurality of sections, wherein an orientation of each section with respect to an optical axis of the image differs from each other, respectively; b) recording a reaction of the person to the image at at least one point in time; and c) determining at least one value for at least one astigmatic effect of at least one eye of the person by evaluating the at least one reaction of the person at the point in time.

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.

The invention relates to an eye tracking system (10) and a method for operating an eye tracking system (10) for determining if one of a left and a right eye of a user is dominant, wherein at least one image of the left and the right eye of the user is captured (S30), based on the at least one image and according to a predefined accuracy function a left accuracy score for the left eye (S34a) and a right accuracy score for the right eye (S34c) is determined and it is determined if one of the left and the right eye of the user is dominant in dependency of at least the left and the right accuracy score (S36). Thereby user-specific properties relating to his eyes can be provided and considered when performing eye tracking so that the robustness and accuracy of eye tracking can be enhanced.

Devices utilizing holographic 4D plenoptic capture and display technologies to generate a light field function to provide glasses-less vision correction for observers with imperfect vision, and to project an image according to the generated light field function, and methods for calibrating a four-dimensional light field for a user with an uncorrected visual acuity.

Devices utilizing holographic 4D plenoptic capture and display technologies to generate a light field function to provide glasses-less vision correction for observers with imperfect vision, and to project an image according to the generated light field function, and methods for calibrating a four-dimensional light field for a user with an uncorrected visual acuity.