How fast can you blink?

How fast can you blink? It’s possible to blink five times in one second.

What eyebrows have to do with sweat?

How much of the brain is involved in seeing?

Why most people will need reading glasses between the ages of 42 and 50?

What researchers found about necktie and glaucoma?

Why do we see the red-light in photos?

Do you know this? One of your eye is dominant eye!

Why do we have eyelashes?

Old eye makeup, such as mascara can cause eye infections.

Do you know why owl turns head?

100 million light sensitive cells