light notes 3 the eye. parts of the eye cornea iris- controls the amount of light that enters the...
Post on 31-Mar-2015
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Light Notes 3
THE EYE
Parts of the Eye
Parts of the Eye• Cornea
• Iris- Controls the amount of light that enters the eye
• Pupil-
• Lens-
• Retina-
• Optic Nerve-
clear, protective layer of your eye
black middle part of the eye, it is actually a hole covered by the clear cornea. It looks black because it is an opening into the dark inside of the eye.
a convex lens that refracts light to the back of the lining of your eyeball
cells on the eyeball lining that picks up the image and sends out nerve signals
nerve that signals travel from your eye to your brain on the optic nerve.
Nearsightedness
• __________________________________
eyeball is too long
can see things that are near but not far
Farsightedness
• __________________________________
eyeball is too short
can see things that are far but not near
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