Retina

Noun

 * 1)  The thin layer of cells at the back of the eyeball where light is converted into neural signals sent to the brain.

Thesaurus
baby blues, banjo eyes, bright eyes, clear eyes, cornea, eye, eyeball, eyelid, goggle eyes, iris, lens, lid, naked eye, nictitating membrane, oculus, optic, optic nerve, orb, organ of vision, peeper, popeyes, pupil, saucer eyes, sclera, starry orbs, unaided eye, visual organ