Melanin in the iris absorbs more photon energy, which creates heat. People with darker eye color have a higher level of melanin, the pigment that adds color to skin, eyes, and hair. But in the same 2014 review, the authors said they believe the increased quantity of melanin may make the difference. Scientists have not fully explained the association between darker eye color and the incidence of cataracts – and not all agree it’s a factor. When those colors start to get clouded, more people notice it. The idea that those with light eyes develop cataracts at a higher rate likely came about from the reality that people tend to look more at eyes that are bright, blue, or green. In two studies reviewed, people with darker eye color were significantly more likely to have a cataract in a follow-up four or five years after the initial assessment. Posterior subcapsular cataract (back of the lens.In a 2014 review for the International Journal of Ophthalmology, researchers discovered that darker eye color is associated with a greater risk of: Several studies indicate that the darker your irises, the more likely you are to develop several different types of cataracts. Eye Color and CataractsĬataracts are the clouding of the eye lenses, a condition that occurs more often as people get older. That’s not to say eye color is the most significant factor in developing cataracts, far from it, but let’s explore how it is thought to change the risk. Increasingly, experts recommend that those with brown or black eyes should more carefully follow cataract prevention measures. Evidence suggests that adults with darker rather than lighter irises are at greater risk for developing certain types of cataracts in late middle age. There are several possible risk factors for developing cataracts, but eye color is perhaps one of the most surprising.
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