The Biconvex Structure That Focuses Light on the Retina Is

Question

The biconvex structure that focuses light on the retina is the ________.
A) cornea
B) pupil
C) lens
D) iris

Accepted Answer

The lens is a biconvex structure that focuses light onto the retina by changing its shape in response to the distance of the object being viewed. The cornea is a transparent layer that covers the front of the eye, but it does not change shape. The pupil is the opening in the center of the iris through which light enters the eye. The iris is the colored part of the eye that regulates the amount of light that enters the eye by controlling the size of the pupil.