Tuesday, April 5, 2011

Is it true that blue-eyed/blondes are more vulnerable to becoming blind?

It is a myth that blue eyes are weaker than brown eyes.  However, because blue eyes have a smaller amount of melanin in their irises, they are more sensitive to light.  Melanin is a dark pigment that protects the macula lutea by trapping light rays and preventing damage.  Since people with blue eyes don’t have as strong of protection as brown eyes, they are not able to resist many different types of light rays, some of which can damage the eye permanently.  Therefore, it is true that blue-eyed people are more vulnerable to becoming blind.  Hair color really has nothing to do with it.

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