The average blink lasts for about 1/10th of a second.
While it takes some time for most parts of your body to warm up to their full potential, your eyes are on their “A game” 24/7.
Eyes heal quickly. With proper care, it only takes about 48 hours
for the eye to repair a corneal scratch.
Seeing is such a big part of everyday life that it requires
about half of the brain to get involved.
Newborns don’t produce tears
Around the world, about 39 million people are blind and roughly 6 times that many have
some kind of vision impairment.
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.