| Noun | 1. | retina - the light-sensitive membrane covering the back wall of the eyeball; it is continuous with the optic nerveneuroepithelium - epithelium associated with special sense organs and containing sensory nerve endings tissue layer, membrane - a pliable sheet of tissue that covers or lines or connects organs or cells of animals fovea, fovea centralis - area consisting of a small depression in the retina containing cones and where vision is most acute parafovea - area of the retina immediately surrounding the fovea visual cell - one of the cells of the retina that is sensitive to light | |