All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
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When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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Our eyes are always the same size from birth, but our nose and ears never stop growing.
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If the human eye was a digital camera, it would have 576 megapixels.
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Those things you see in your eyes when you stare into space are called Mouches Voltanes, which are also broadly referenced to as Floaters.
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Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
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Optical illusions occur when what the eyes see conflicts with what the brain expects.
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