1 The average blink lasts for about 1/10th of a second.
2 Seeing is such a big part of everyday life that it requires about half of the brain to get involved.
3 Newborns don’t produce tears. They make crying sounds, but the tears don’t start flowing until they are about four to 13 weeks old.
4 Doctors have yet to find a way to transplant an eyeball. The optic nerve that connects the eye to the brain is too sensitive to reconstruct successfully.
5 You blink about 12 times every minute.
6 Each of your eyes has a small blind spot in the back of the retina where the optic nerve attaches. You don’t notice the hole in your vision because your eyes work together to fill in each other’s blind spot.
7 Of all the muscles in your body, the muscles that control your eyes are the most active.
8 Eighty per cent of vision problems worldwide are avoidable or even curable.
9 Your eyes start to develop two weeks after you are conceived.
10 To protect our eyes, they are positioned in a hollowed eye socket, while eyebrows prevent sweat from dripping into your eyes, and eyelashes keep dirt out of them.