What structure in the eye has specialized nerve cells that receive information about light?

1 Answer
Jul 20, 2017

The retina.


The retina is the innermost layer of the inner chamber of the eye.

It s a thin membrane that contains three types of photo-receptor cells - specialised nerve cells that sense light and transmit the information received to the brain via the optic nerve.

The three types of photo-receptor cells are rods, cones, and photosensitive retinal ganglion cells (discovered rather recently).

Rods are cells that are extremely sensitive to light and function in low light when cones are unable to sense light. The vision perceived by rods tends to be monochromatic.

Cones are cells that require comparatively brighter light to send information, and they perceive colours. There are three types of cones corresponding to different wavelengths (and hence colours) of incident light.

Photosensitive retinal ganglion cells are supposed to be less concerned with sight and more with circadian rhythms and pupillary reflex.