Question

what is function of each part of human eye​

Answer 1

1. Cornea-refraction of the light rays falling on the eye

2.Iris-To control the size of pupil

3.Pupil- To regulate and control the amount of light entering the eye

4.Retina- To act as screen to obtain the image of object and generate electrical signal are sent to the brain via optic nerves

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Answer 2

The sclera, or white part of the eye, protects the eyeball. The pupil, or black dot at the centre of the eye, is an opening through which light can enter the eye. The iris, or coloured part of the eye, surrounds the pupil. It controls how much light enters the eye by changing the size of the pupil.