The iris

People who are near-sighted can’t see things far away. People who are far-sighted can’t see things close up. This happens because the eyeball is too long or is

People generally read about 25% slower on a computer screen than paper.

One human eyeball weighs about 28 grams or 1 ounce

Heterochromia (Hetero = different; chromia = color)

The human eye can distinguish about 500 shades of a color.

True

Brown

At about two months a baby can see clearly if they have normal eyesight. Before that things are fuzzy and blurry.

Your eyes are made up of about 2 million working parts.

At about age 12 your eyeball reaches its full size.

The average person blinks about 12 times each minute. That's more than 10,000 times a day!