‘Blind’ cells sense light

Melanopsin pigment in the eye could be more light sensitive than the pigment that allows for night vision, rhodopsin.

A two-year study using supercomputer clusters has shown that melapnopsin, a photosensitive retina pigment that senses non-visual environmental light, is highly receptive to light changes and allows the nervous system to synchronise with the day/night rhythm.

It is now known that the human retina contains not only photoreceptor cells, as previously assumed, but photosensitive pigment as well.

Read more at Bowling Green State University