The iris controls the
A)thickness of the lens.
B)size of the pupil.
C)flexibility of the cornea.
D)distance between the lens and retina.

Question

Quizplus · Accepted Answer

The iris is the pigmented part of the eye that regulates the size of the pupil, which determines how much light enters the eye. Therefore, the iris controls the size of the pupil, not the thickness of the lens, flexibility of the cornea, or distance between the lens and retina.

The Iris Controls the