What Is Melanin?
Reviewed: Dr. Mera
6. Melanin Effects
Due to northward migration, individuals with lighter skin acclimate to stronger solar radiation. When exposed to ultraviolet light, their skin darkens to give them more protection when required. This also means that those with darker skin are more protected against sunburn and skin cancer. In the eyes, melanin helps protect against high frequency visible light and ultraviolet light.
Therefore, individuals with lighter irises such as those with green, gray, and blue eyes have a higher risk of eye-related issues. The ocular lens also yellows with age to provide additional protection.
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