Question

I have seen in some books that pupil control the amount of light entering in our eyes.Is it correct?explain me please.

Answer 1

The books are not exactly correct. The Iris controls the amount of light entering the eye by controlling the aperture of the pupil.

Explanation:

The pupil is actually nothing but an opening in the eye that allows light to reach the retina. The iris is a muscle that controls the size of the pupil's aperture. It will increase the aperture of the pupil to allow more light into the eye when there is low light. In bright light the iris decreases the aperture of the pupil to prevent too much light from entering the eye, which can be harmful to the retina.