Tigers can see 6 times better at night than humans.
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There's a woman named Veronica Seider who had vision 20x better than average. She could identify people more than a mile (1.6km) away.
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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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Our eyes are always the same size from birth, but our nose and ears never stop growing.
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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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Poor eyesight (myopia) is associated with higher IQ.
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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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