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The Epic Interactive Encyclopedia 1997
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retina
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1992-09-03
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The retina is a light-sensitive area at the
back of the eye connected to the brain by the
optic nerve. It has several layers and in
humans contains over a million rods and
cones, sensory cells capable of converting
light into nervous messages that pass down
the optic nerve to the brain.
Subject by: Vince Pike