The Sight. By Eva Guzmán 6ºA. Index. How does the eye works Activities. Characteristics and function of the eyes. Parts of an eye. The eyes have got diferent colors such us blue , brown or green. Characteristics and functions of the eyes.
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By Eva Guzmán 6ºA
How does the eye works
The iris: is the colored part of the eye, around the pupil. It\'s made of muscle fibers that open and close the pupil.
The pupil: is a small hole that lets light go into the eye.
The retina: has got a thin layer of optic cells that detect light and colours. These optic cells send information to the optic nerve.
The cornea: is a transparent layer of cells. It covers and protects the iris and the pupil.
The lens: is behind the pupil and the iris. It focuses light on the retina.
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The optic nerve transmit the nerve impulses to the brain. Finaly, the brain interprets the impulses. It also turns the image the right way up again.
Parts of an eye