RETINA, DRAWING. RETINA, DRAWING The eye and the retina. Focus on the stucture of the retina, from the left to the right : _ vitreous body in grey, _ internal limiting membrane in red, _ ganglion cells of which the axons form the optic nerve, in yellow, _ bipolar cells that liaise the photoreceptors and the ganglion cells, in orange, _ amacrine cells interneurons insuring the horizontal diffusion of the nerve impulse, in purple, _ horizontal cell interneuron insuring the diffusion of the nerve i