Question

What is the function of iris?​

Answer 1

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★The main function of iris is:-

• The function of the iris in the eye is to control the amount of light that reaches the retina.

• It does this by changing the size of the pupil, the transparent window that allows light into the eye's interior.

Answer 2

In human and most mammals and birds the iris ( plural irides or irises) is athin annular structure in the eye , responsible for controlling the diameter and size of the pupil and thus the amount of light reching the retinea ,eye colour is defined bt that of the iris