Sensitive to Light? Blame Your Blue Eyes.
Eye color is not immune from myths and mystery. One legend states a person with blue eyes sees heaven and brown eyes see earth -- so someone with one brown and one blue eye can see both. It's also been speculated that those with blue eyes have rich imaginations while people with hazel eyes are passionate, green eyes indicate sharp minds and brown eyes indicate people who are calm with underlying passion.
Science, of course, shows little interest in myths but has found that eye color can tell you a thing or two about a person.
Eye color is created by melanin, which also dictates skin color. The more melanin in your iris, which is the colored area surrounding the pupil, the darker your eye color will be. Caucasian babies are born with no melanin, and thus have blue eyes, until about three years of age when their eyes darken to its permanent color (Asian and black babies are born with dark brown eyes). More melanin also means better protection from the sun-- the pigment in your eyes literally protects your retina.
Light eyes such as blue, green or grey are more sensitive in sunlight. Most people are sensitive to sudden light, such as walking out of a dark hallway on a sunny day. But, if you find yourself needing to wear sunglasses even indoors, it might be a sign of a more serious condition.
Age-related macular degeneration is more common in Caucasians than African Americans, as eyes with less pigment allow more light in the eye. But, studies show people with dark brown eyes are subject to greater risk for developing cataracts. Protecting your eyes from direct sunlight can lower this risk, though.
If nothing else, your eye color should give you an excuse to buy a new pair of shades!