Why Do Some People Wear Glasses? - S1.E16
The explanation of the parts of the eye, such as the lens and the muscles surrounding it, the iris and its function of letting light into the eye, the retina, lined with light-sensitive cells shaped like rods and cones. How the shape of one's eyeball determines the eye's capacity to see.
Why Do Some People Wear Glasses? - S1.E16
December 26, 1999
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