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| cornea, pupil and iris, lens, vitreous humor, retina, ganglion cells, optic nerve, visual cortex |
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| transparent surface, takes in the light, does the majority of the focusing |
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| iris is the muscle that creates the pupil, makes it bigger and smaller |
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| crystal-looking shape, bends the light, focuses light towards back of the eye |
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| tissue at back of eye, contains other cells (rods and cones), change from light to action potential, rods and cones are photo receptors |
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| about 120 million in each eye, spread throughout retina but a higher concentration in periphery, allow you you to see black and white (low-light conditions) |
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| 3 (red, green, blue), allow you to see color, about 6 million per eye, spread throughout retina but a higher concentration near phobia |
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| action potential travels, merge together to form optic nerve |
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| carries information from eye to the brain, splits at optic chasm (half from each eye to each hemisphere)-half to thalamus and half to tectum |
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