fun eye facts
"Your eyes are your most precious sense care for them properly!"
FUN FACTS ABOUT HUMAN EYES
Your eyes are the most complex organs you possess except for your brain. They are composed of more than two million working parts.
Most people blink every 2-10 seconds. Each time you blink, you shut your eyes for 0.3 seconds, which means your eyes are closed at least 30 minutes a day just from blinking.
It is impossible to sneeze with your eyes open.
The adult eyeball measures about 1 inch (2.5 cm) in diameter. Of its total surface area only one-sixth is exposed.
Women blink nearly twice as much as men.
The number one cause of blindness in adults in the United States is diabetes.
A newborn baby sees the world upside down because it takes some time for the baby's brain to learn to turn the picture right-side up.
One in every 12 males is color blind.
Your eyes are always the same size from birth, but your nose and ears never stop growing.
Pirates wore earrings because they believed it improved their eyesight.
The human eye can distinguish about 500 shades of grey.
Blind people can see their dreams as long as they weren't born blind.
The entire length of all the eyelashes shed by a human in their life is over 98 feet (30 m).
The older we are the less tears we produce.
FUN FACTS ABOUT ANIMAL EYES
An ostrich has eyes that are two inches across. Each eye weighs more than the brain.
A chameleon's eyes can look in opposite directions at the same time.
The placement of a donkey's eyes in its heads enables it to see all four feet at all times.
Dolphins sleep with one eye open.
It is a common misconception that bats are blind. Almost all bats can see, and their sense of sight and smell is well developed, but these bats don't use their eyes to "see" where they're going instead, they use sound waves.
A scallop has approximately 100 eyes around the edge of its shell.