Furthermore, the rod-to-cone cell ratio can be variable even among diurnal species.
From the en.wikipedia.org
Each cone cell of a bird's retina contains an oil droplet which may contain carotenoid pigments.
From the en.wikipedia.org
Shedding and debris collection must be precisely synchronized to maintain proper rod and cone cell function.
From the sciencedaily.com
Furthermore, these individuals show only partial impairment of cone cell function but again have retained rod cell function.
From the en.wikipedia.org
When the two beams recombine, the pattern of interference allows the team to work out the position of each disc in the cone cell.
From the newscientist.com
The first step in visual perception is absorption of a photon by an opsin pigment in the membranous outer segment of a rod or cone cell.
From the nature.com
Individuals with the congenital form of this disorder show complete absence of cone cell activity via electroretinography at high light levels.
From the en.wikipedia.org
They found no phagosomes, essentially compartments made in cone cell membranes in which specialized cells called phagocytes of the retinal pigment epithelium eat cone material.
From the sciencedaily.com
This area centralis has a high rod-to-cone cell ratio in many diurnal species studied thus far, whereas diurnal anthropoids have no rod cells in their fovea.