This also turned out to be a misnomer: arrestin-1 expresses at comparable very high levels in both rod and cone photoreceptor cells.

Cone opsins, employed in color vision, are less-stable opsins located in the cone photoreceptor cells.

Zero summation occurs when each cone photoreceptor cell contacts a single ganglion cell via a single bipolar cell.

Retinal summation describes the relationship between different types of cells in the retina: cone photoreceptor cells, bipolar cells, and ganglion cells.

Furthermore, Petroc Sumner and colleagues have investigated the cone photoreceptor cells of honey possums and compared them with the colour changes of B. attenuata.

At the "center" of the retina (the point directly behind the lens) is the fovea, which contains only cone photoreceptor cells; this is the region capable of producing the highest visual acuity.

Peripherin 2 (sometimes referred to as peripherin/RDS or simply RDS) is a cell surface glycoprotein found in the outer segment of both rod and cone photoreceptor cells.

The phosphodiesterase (PDE) isozymes, found in several tissues including the rod and cone photoreceptor cells of the retina, belong to a large family of cyclic nucleotide PDEs that catalyze cAMP and cGMP hydrolysis.

To resolve detail, the eye's optical system has to project a focused image on the fovea, a region inside the macula having the highest density of cone photoreceptor cells (the only kind of photoreceptors existing on the fovea), thus having the highest resolution and best color vision.