retina
/ˈrɛtɪnə
/noun (plural retinas or retinae /ˈrɛtɪniː/)
A layer at the back of the eyeball that contains cells sensitive to light, which trigger nerve impulses that pass via the optic nerve to the brain, where a visual image is formed.And for vision it is also necessary that there should be visual purple behind the retina and an opaque cornea and iris....
- As with similar work in the United States, the prosthetic retina works by passing artificially stimulating the optic nerve, in line with signals from a tiny digital camera mounted on a pair of glasses.
- The chip captures light that enters the eye, and generates an electrical signal that is transmitted to the overlaying neural cells of the retina.
Origin
Late Middle English: from medieval Latin, from Latin rete 'net'.