Those things you see in your eyes when you stare into space are called Mouches Voltanes, which are also broadly referenced to as Floaters.
9
Sheep, goats, octopuses, and toads have rectangular pupils.
7
The colossal squid has the largest eyes in the world.
4
The human eye blinks an average of 4,200,000 times a year.
233
The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Tigers can see 6 times better at night than humans.
305
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
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