25 Amazing facts about the human eye

Fact 1: The human eye can distinguish about 10 million different colors.

Fact 2: Your eyes are the only organs that can function at 100% ability without rest.

Fact 3: The muscles controlling your eyes are the most active muscles in the body.

Fact 4: Eyes began to develop 550 million years ago, and the first eyes were likely simple light-sensitive cells.

Fact 5: An eye's lens is quicker than any camera's autofocus, adjusting in just milliseconds.

Fact 6: Your eyes can process about 36,000 bits of information every hour.

Fact 7: 80% of vision problems worldwide are avoidable or even curable.

Fact 8: Your eyes can detect a candle flame from 1.6 miles away on a clear, dark night.

Fact 9: Babies are born color blind; they can only see black, white, and shades of gray.

Fact 10: The cornea, the outermost part of the eye, is the only tissue in the human body without blood vessels.

Fact 11: On average, your eyes blink about 17 times per minute.

Fact 12: Your eyes can focus on about 50 things per second.

Fact 13: Your eyes can distinguish between 500 shades of gray.

Fact 14: Your eye is approximately 24.2 millimeters in diameter.

Fact 15: The cornea is the only living tissue in the human body that does not contain blood vessels.

Fact 16: An eye contains more than 2 million working parts.

Fact 17: 80% of memories are determined by what we see.

Fact 18: Your eyes start to develop two weeks after you are conceived.

Fact 19: Tears are produced by your lacrimal glands to protect your eyes from drying out.

Fact 20: The retina, located at the back of the eye, contains 137 million light-sensitive cells.

Fact 21: Your eyes can focus on 50 things per second.

Fact 22: Your eyes can move up to 100,000 times a day.

Fact 23: The lens of the eye continues to grow throughout your lifetime.

Fact 24: The most common eye color is brown.

Fact 25: An eye blinks over 4.2 million times a year.