Question

Write about iris and pupil

Answer 1

Answer:

Iris is a dark muscular diaphragm that controls the size of pupil. When light is very bright, the iris contracts the pupil to allow less light to enter the eye and do vice versa in dim light .The pupil opens completely through the relaxation of iris .

The pupil regulates and controls the amount of light entering the eyes. The pupil of eye acts like a variable aperture whose size can be varied with the help of iris.

Answer 2

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Iris: It regulates the amount of light entering the pupil by contracting and relaxing.

Cornea: It focuses the light that enters inside the eye.

Pupil: The light passes through pupil