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1
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coloured ring of muscle tissue
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3
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focuses light clearly on the retina
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4
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central hole in the iris
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5
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cells that respond to different colours
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6
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carries nerve impulses to the brain
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8
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alters the shape of the lens
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10
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transparent coating that protects the eye
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11
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the shape of a lens that would correct short sightesdness
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2
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connects the ciliary muscle to the lens
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7
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cells that allow you to see in low light levels
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9
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the shape of a lens that would correct long sightedness
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