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The Spectator
Wacky Facts:Eyeballs
by Elijah LaChance '10Science & Technology Editor
• The human eyeball weighs approximately 28 grams.
• Humans can distinguish approximately 500 shades of gray.
• The cornea is the only living tissue in the body that does not contain any blood vessels.
• Sailors once thought wearing a gold earring would improve their eyesight.
• The average person reads approximately 25 percent more slowly off a computer screen than from paper.
• All babies are color blind at the time they are born.
• Babies also do not produce tears until they are approximately six to eight weeks old.
• The most common injury caused by cosmetics is to the eye from a mascara wand.
• The average person blinks over ten million times a year.
• Although reading in dim light can make your eyes feel tired, it is not actually harmful.
• Eagle vision: eagles can see approximately three times farther than human beings.
• Having increased peripheral, or corner, vision is directly correlated to reading faster.
• The human eye can process 36,000 pieces of information per hour.
• The eye uses 65 percent of a person's brain power, the highest of any body part.
• The eyes adjust in milliseconds when you move your head in order to keep your vision steady.