Q. The amount of light entering the eye is controlled by
Solution:
In humans and most mammals and birds, the iris is a thin, circular structure in the eye, responsible for controlling the diameter and size of the pupil and thus the amount of light reaching the retina. Eye colour is defined by that of the iris. In optical terms, the pupil is the eye’s aperture, while the iris is the diaphragm.
Get Question Bank
Strengthen Your Practice with our comprehensive question bank.