Question

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

Answer 1

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

Answer 2

The cornea, pupil, iris, lens, and retina are the parts of the eye that interact with visible light. The cornea is at the front of the eye and is transparent, and curved. The cornea acts as a protective cover for the pupil and the iris. The cornea is where reflecting light rays first come into the eye. The cornea's curved surface helps focus the light rays that enter the eye.Then the lens of your eye, which is behind the pupil and iris, refracts the light that enters the eye to focus it onto the retina. The retina, on the back of the eye, collects the focused and refracted light. The retina has two types of light sensitive cells, rods and cones. The rods and cones are responsible for producing the nerve impulses sent to the brain. Cones react to colors and the rods react to light in general. These enable the eyes to interpret the color, and dimensions of objects.