Question

Human eye structure and explain them

Answer 1

Through a process called accommodation, this lens helps the eye automatically focus on near and approaching objects, like an autofocus camera lens. Light focused by the cornea and crystalline lens (and limited by the iris and pupil) then reaches the retina — the light-sensitive inner lining of the back of the eye.

Answer 2

CORNEA : Light enters the through a thin membrane is called cornea. It forms a transparent buldge on the front surface of the eyeball. The eye is approximately spherical in shspe of which is of dia.eter of about 2.3cm.

CRYSTALLINE LENS : Merely provides a finer adjustment of focal lenght to focus on different objects.

IRIS : A dark muscular diaphragm that controls the size of the pupil.

PUPIL : It controls the amount of light entering our eye.

RETINA : Is a dlicate membrane having enormous number of light sensitive cells. It passes the inverted image to the brain via optic nerve by signals. Then the brain sense this as an objects