Question

1 cornea, 2 iris 3 crystalline lens 4 ciliary muscle. write a function of each of the following human eyes​

Answer 1

(i) Cornea: If refracts most of the light into eyes.

(ii) Iris: Gives colour to eyes, controls size of pupil.

(iii) Crystaline Lens: Focuses the image of the object on the retina.

(iv) Ciliary Muscles: Holds the eye lens and adjusts its focal length.

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Answer 2

1. corena acts as protective layer.

2.iris it control the size of pupil.

3.pupil it regulates and control the amount of light entering the eye.

4.ciliary muscles help in changing the curvature of eye lens there by changing its focal lenght