The Visual System Part 2. The Retina Photoreceptor cells 4 light sensitive proteins: rods with 1 type 3 types of cones, each with a single type Receptors.
The Visual System Part 2. The Retina Photoreceptors –Rods –Cones Bipolar cells Ganglion Cells –axons converge at optic disk –axons constitute optic nerve.