Submitted by admin on Mon, 04/21/2014 - 20:42
definition:
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.
sentence:
The chip captures light that enters the eye, and generates an electrical signal that is transmitted to the overlaying neural cells of the retina.
difficulty:
medium
toefl frequency:
1
toefl classification: