Question

write the function of :
1) cornea 2) iris 3) crystalline lens 4) ciliary muscle
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Answer 1

cornea:light enters tge eye through cornea. maximum light is refracted inside the eye through it.

iris:iris is behind retina . it is a fleshy dark screen type of a structure

crystslline lens: this lens provide create real and inverted image of the object on tge screen inside the eye. this lens can also change their focal length accordingly.

ciliary muscles: they provide help to tge lens to change tge focal length.

im not sure abt ciliary muscles. but athers are correct

Answer 2

1) The cornea'smain function is to refract, or bend, light.

2) It helps regulate the amount of light entering the eye.

3) The crystalline lens focus the light rays entering in the eye   and forms the image on retina. 

4) The main function of the ciliary muscles used to change theshape of the lens in the eye to help with focusing.

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