Eye & Ear

©1996 University of Kansas Medical Center

Department of Anatomy and Cell Biology

Remember that the retina is built "backwards." That is, the light passes through all the other retinal cells before reaching the photoreceptors.

Light comes from this direction

Optic Nerve Fibers

Ganglion Cell Layer

Inner Plexiform Layer
(Synapses between the Inner Nuclear Layer & the Ganglion Layer)

Inner Nuclear Layer
(Bipolar Cells, Amacrine Cells, Horizontal Cells)

Outer Plexiform Layer
(Synapses between the Photoreceptors & the Inner Nuclear Layer)

External Nuclear Layer
(Nuclei of the Photoreceptors)


Once the light hits the photoreceptors it is converted into an electrical signal and sent back up through all of these cells in the opposite direction.