Advantages of Blue EyesĪ big advantage to blue eyes is that research shows they might be linked to a lower risk of developing cataracts. It is estimated that about 8 to 10 percent of the world population has blue eyes.īlue Eyes & Eye Health: Advantages & DisadvantagesĬertain health conditions and traits are more common in people with blue eyes versus people with other eye colors. The American Academy of Ophthalmology cites a 2014 Harris Poll confirming that in the United States, 27 percent of the population has blue eyes. As there is no blue pigment in the irises, the eyes appear blue due to physics. The outcome? The eye appears a blue color.Īccording to the American Academy of Ophthalmology, the blue color is not due to a blue pigment but to a lack of pigment to stop the light rays. Even in blue-eyed individuals, the back layer has brown pigment, but the front layer in blue eyes has no pigment.īecause of this lack of pigment in the front layer of the iris, the fibers interact with light and absorb some of the longer light rays. The color of the eye is created by the different layers in the iris. Now, it is estimated that one in six babies has blue eyes.

In the 1950s, more than half the population had blue eyes. In the United States, blue eyes are becoming less common. Before that point, it was believed that most people had brown eyes. The color blue is considered a genetic alteration, which may have occurred about 6,000 to 10,000 years ago. Approximately 8 to 10 percent of the world’s population has blue eyes.

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