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

Answer:

Iris acts as the aperture manager of the eye. It is a group of circular and longitudinal muscles, which work alternately changing the pupil.  

Explanation:

A pupil is an aperture through which light enters the internal of the eye.

During the distant vision, the pupil becomes narrower as iris contracts.

And during the near vision, the pupil becomes large as iris relaxes.

So, the size of the pupil while regulating the light is controlled by the iris.

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