Of or relating to seeing or sight
An item of illustrative matter, such as a film, slide, or model, designed to supplement written or spoken information so that it can be understood more easily
An imaginary line representing the path of light from an object to the eye
Sharpness of vision, measured by the ability to discern letters or numbers at a given distance according to a fixed standard
The angle formed at the eye by rays from the extremities of an object viewed
A binary star of which the components are sufficiently far apart to be resolved by an optical telescope
The part of the cerebral cortex that receives and processes sensory nerve impulses from the eyes
Another term for field of vision.
Another term for rhodopsin.
A condition in which a person can see but cannot recognize or interpret visual information, due to a disorder in the parietal lobes
A device for displaying input signals as characters on a screen
Using both sight and sound, typically in the form of slides or video and recorded speech or music