retinal

Of or pertaining to the retina.

The visual purple.

A retinoid compound (C20H28O), closely related to vitamin A, which is a component of the visual pigments in the eye. It is also called retinaldehyde and vitamin A aldehyde.

One of several yellow or red carotenoid pigments formed from rhodopsin by the action of light; retinene.

In or relating to the retina of the eye.