Disclosed is a polarized visual acuity chart projector for generating visual acuity charts polarized differently for a binocular vision examination. The polarized visual acuity chart projector comprises: a first image display device configured to project a first visual acuity chart polarized in a first direction; a second image display device configured to project a second visual acuity chart polarized in a second direction; and an optical splitter configured to transmit the first visual acuity chart emitted from the first image display device as it is to thereby project the first visual acuity chart polarized in the first direction in the direction of an examinee, and configured to reflect the second visual acuity chart polarized in the second direction emitted from the second image display device to thereby project a second visual acuity chart polarized in a third direction different from the first direction in the direction of the examinee.

Disclosed is a polarized visual acuity chart projector for generating visual acuity charts polarized differently for a binocular vision examination. The polarized visual acuity chart projector comprises: a first image display device configured to project a first visual acuity chart polarized in a first direction; a second image display device configured to project a second visual acuity chart polarized in a second direction; and an optical splitter configured to transmit the first visual acuity chart emitted from the first image display device as it is to thereby project the first visual acuity chart polarized in the first direction in the direction of an examinee, and configured to reflect the second visual acuity chart polarized in the second direction emitted from the second image display device to thereby project a second visual acuity chart polarized in a third direction different from the first direction in the direction of the examinee.

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 apparatus generates a coherent illumination beam. An embedded light-scattering apparatus in a transparent substrate illuminates a reflective optical element which is also embedded inside the same substrate. The reflective optical element is designed to provide a desired beam profile.

An apparatus generates a coherent illumination beam. An embedded light-scattering apparatus in a transparent substrate illuminates a reflective optical element which is also embedded inside the same substrate. The reflective optical element is designed to provide a desired beam profile.

In various embodiments, a head-mounted apparatus having first and second display screens for, respectively, displaying visual content dichoptically to left and right eyes of a user is utilized to treat, improve, or prevent degradation of the user's vision.

The present disclosure relates generally to systems and method for testing and determining corrective lens prescription for a patient. In an example embodiment, a system includes a hand-portable first electronic device, a second electronic device with a computerized screen, and a server to conduct a vision test for a person. The vision test includes determining, an axis prescription, a cylinder prescription, and a sphere prescription for each eye of the person. A corrective lens prescription is provided for the person based, at least in part, on the determined axis, cylinder, and sphere prescription for each eye of the person.

The present disclosure relates generally to systems and method for testing and determining corrective lens prescription for a patient. In an example embodiment, a system includes a hand-portable first electronic device, a second electronic device with a computerized screen, and a server to conduct a vision test for a person. The vision test includes determining, an axis prescription, a cylinder prescription, and a sphere prescription for each eye of the person. A corrective lens prescription is provided for the person based, at least in part, on the determined axis, cylinder, and sphere prescription for each eye of the person.

An optotype presenting apparatus that is capable of carrying out examinations accurately is provided. An optotype presenting apparatus includes a display and a controller. The display includes left eye optotype display regions and right eye optotype display regions. The left eye optotype display regions output light having a first polarization axis. The right eye optotype display regions output light having a second polarization axis orthogonal to the first polarization axis. The left eye optotype display regions and the right eye optotype display regions are alternately arranged along pixel lines. The controller is capable of displaying a plurality of optotypes selectively on the display. Further, the controller controls the display based on a type of an optotype displayed on the display to change display luminance.

An optotype presenting apparatus that is capable of carrying out examinations accurately is provided. An optotype presenting apparatus includes a display and a controller. The display includes left eye optotype display regions and right eye optotype display regions. The left eye optotype display regions output light having a first polarization axis. The right eye optotype display regions output light having a second polarization axis orthogonal to the first polarization axis. The left eye optotype display regions and the right eye optotype display regions are alternately arranged along pixel lines. The controller is capable of displaying a plurality of optotypes selectively on the display. Further, the controller controls the display based on a type of an optotype displayed on the display to change display luminance.