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Alyson
7 January, 17:10
How does the human eye work (playgarism free)
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Grimes
7 January, 17:42
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The front of the eye has an adjustable hole in it called the pupil, covered by a spherical "window" known as the cornea. Light passes through these structures to the lens, a (normally) transparent focusing device controlled by muscles and ligaments. The focused light shines through the fluid-filled interior of the eye to the retina at the back of the eye. The retina contains specialized cells (rods and cones) that react to brightness, darkness and color frequencies, sending this information through the optic nerve to the brain for visual processing ... remember that never impulses control the blinking of eye not the release of hormones.
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