Retina vs. Rhodopsin



(ophthalmology) The thin layer of cells at the back of the eyeball that contains rods and cones sensitive to light, which trigger nerve impulses that pass via the optic nerve to the brain, where a visual image is formed.


(biochemistry) A light-sensitive pigment in the rod cells of the retina; it consists of an opsin protein bound to the carotenoid retinal


The delicate membrane by which the back part of the globe of the eye is lined, and in which the fibers of the optic nerve terminate. See Eye.


The visual purple. See under Visual.


the light-sensitive membrane covering the back wall of the eyeball; it is continuous with the optic nerve


a red photopigment in the retinal rods of vertebrates; dissociates into retinene by light



The retina (from Latin: rete ) is the innermost, light-sensitive layer of tissue of the eye of most vertebrates and some molluscs. The optics of the eye create a focused two-dimensional image of the visual world on the retina, which translates that image into electrical neural impulses to the brain to create visual perception.



Rhodopsin (also known as visual purple) is a light-sensitive receptor protein involved in visual phototransduction. It is named after ancient Greek ῥόδον (rhódon) for rose, due to its pinkish color, and ὄψις (ópsis) for sight.

Retina Illustrations

Rhodopsin Illustrations

Popular Comparisons

Latest Comparisons

Trending Comparisons