Amacrine cells are interneurons found in
the retina and are synaptically active in the inner plexiform layer, and follow
the direct pathways of the photoreceptor-bipolar-ganglion cell chain at the
second synaptic level. These cells exist with no true axon as a part of their
anatomy. They regulate visual messages that are sent to the ganglion cell.

Messages are relayed from bipolar neurons, to then be interpreted by amacrine
cells, and to be communicated back with the ganglion cells. Amacrine cells decipher
messages using specific neurotransmitters. They are differentiated by the width
of their connection with the inner plexiform layer.