The eye

The eyes are the most sensitive and delicate organs we possess, and perhaps the most amazing. They present us with the window through which we view the world, and are responsible for four fifths of all the information our brain receives – which is probably why we rely on our eyesight more than any other sense.

The main function of the eye is to work with the brain to provide us with vision. The eye and brain translate light waves into a sensation we call vision.

The eye has many parts.

The lens of the eye is located immediately behind the iris.

The cornea is the most powerful structure focusing light entering the eye.

The retina sends impulses through the optic nerve back to the brain, which translates the impulses into images that we see.

The pupil is the hole in the center of the eye where light passes through.

The iris is the colored part of the eye.

The optic nerve acts like a cable connecting the eye with the brain.

The sclera is the white, opaque portion of the eye. It provides protection and serves as an attachment for the extraocular muscles which move the eye.

An eye doctor is called an opthamologist. Periodic eye examinations by an opthamologist is the best defense against eye disease.

Examinatiom of the eye

Date: 2015-04-20; view: 958