- the innermost coat of the posterior part of the eyeball that receives the image produced by the lens, is continuous with the optic nerve, and consists of several layers, one of which contains the rods and cones that are sensitive to light.
- a brand name used by Apple, Inc., to describe display screens having a resolution so high that it is difficult to see individual pixels with the human eye: a Retina display; Retina technology; Retina quality.
- a brand of tretinoin, used especially to reduce wrinkles caused by overexposure to the sun.
- the light-sensitive membrane forming the inner lining of the posterior wall of the eyeball, composed largely of a specialized terminal expansion of the optic nerve. Images focused here by the lens of the eye are transmitted to the brain as nerve impulses
