Question

Explain the function of Cornea, Iris, and Pupil.

Answer 1

Cornea: The front transparent part of the sclera is called the cornea. Light enters the eye through the cornea. Most of the refraction in eye happens in the cornea.

Iris: A dark-muscular tissue and ring like structure behind the cornea is known as the iris. It controls the size of the pupil. The colour of the iris actually indicates the colour of the eye. The iris also regulates the amount and intensity of light entering the eyes by adjusting the size of iris.

Pupil: A small opening in the iris is known as a pupil. Its size is controlled by the help of iris. It controls the amount of light that enters the eye.