Cartoon CORDMelanopsin ganglion cells extend dendrites through the inner retina into the outer retina, closely opposed to cone photoreceptors.  This is very suggestive of a novel circuit in the mammalian retina.

SORD and CORD for websiteAn example of the two types of Outer Retinal Dendrites; Simple Outer Retinal Dendrites – SORDs on the left, and Complex Outer Retinal Dendrites – on the right.

Melanopsin VGlut Cross Section p12_adjusted for websiteA cross-section of mouse retina in which a melanopsin ganglion cell ORD (pink) is closely opposed to a cone photoreceptor (green) in the Outer Plexiform Layer.