Retina

(ret’ -in-ah) [rete, a net]. The delicate membrane of the eye representing the terminal expansion of the optic nerve, and extending from the point of entrance of the nerve forward to its termination in the ora serrata. It consists of the following layers, named from behind forward: (a) the pigment-layer;(b) the neuroepithelial layer, comprising the layer of rods and cones (Jacob’s membrane, bacillary layer), the outer limiting membrane, and the outer nuclear layer; (c) the cerebral layer, comprising the outer reticular layer (outer granular layer), the inner nuclear layer, the inner reticular layer (inner granular layer), the ganglion-cell layer, the nerve-fiber layer. These layers are cemented together by a supporting framework of connective ti ue, the fibers of Miiller, or radiating fibers. 555