Most of the focusing is done at the front of the eye by the _____, a clear membrane that bends light inward, with additional, smaller adjustments being made by the _____.
A)lens; cornea
B)iris; cornea
C)cornea; lens
D)lens; iris

Question

Quizplus · Accepted Answer

The cornea is a clear membrane that bends light inward and is responsible for most of the focusing at the front of the eye. The lens also makes smaller adjustments to the focusing, but it is not located at the front of the eye. The iris is responsible for controlling the amount of light that enters the eye, but it does not contribute to focusing.

Most of the Focusing Is Done at the Front of the Eye