The part of the eye which controls the entry of light is called the:iris cornea  lensretina

The part of the eye that controls the entry of light is called the Iris. 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. The eye looks colored because of the iris. The other parts mentioned, the cornea, lens, and retina, also play crucial roles in vision, but they do not control the entry of light. The cornea and lens help focus light on the retina, and the retina is the light-sensitive tissue at the back of the eye that converts light into electrical signals sent to the brain.