Describe the functions of the lens, cornea, and retina in the human eye in terms how each reacts to light entering the eye.

The cornea is a transparent membrane which bends or retracts the light to focus the light through the pupil
The second refraction occurs in the lens which help focus the image on the retina
The retina is light sensitive cells that lines the inside of your eyes it contains cells called rods and cones. Rods are sensitive and detect dim light while cones detect brighter light and colors

Idont know but good luck; )