Question

expali the structure of human eye

Answer 1

The cornea and sclera are connected by an area termed the limbus. The iris is the pigmented circular structureconcentrically surrounding the center of the eye, the pupil, which appears to be black. ... Light energy enters the eyethrough the cornea, through the pupil and then through the lens

Answer 2

The main parts of human eye are Cornea,or is, pupil,ciliary muscles,eye lens,retina and optical nerves.

▶PUPIL
opens and closes in order to regulate and control the amount of light.
▶IRIS
controls the amount of light level similar to the aperture of the camera. it controls the movement of the pupil.
▶CORNEA
transparent spherical membrane covering the front of the eye. Most of the refraction of light rays entering the eye occur at the outer surface over the Cornea.
▶EYE LENS
it is the central part of the eye that facilitates the image formation.
▶RETINA
captures the light rays focused by the lens and sends impulse to the brain through ciliary muscles.
▶CILIARY MUSCLES
contracts and expands in order to change the shape of the eye lens.
▶OPTICAL NERVES
transmits electrical signals to the brain.
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