According to research published in the journal Investigative Ophthalmology & Visual Science, scientists from Austria found that eye freckles — dark spots on the colored part of the eye (the iris) —are more frequently found in people with higher lifetime exposure to sunlight. In some cases, eye freckles may indicate the presence or risk of sunlight-triggered eye diseases, like cataract or macular degeneration. “While we do not know the exact role of sunlight in several eye diseases, we now have a biomarker (iris freckles) indicating high amounts of chronic sunlight exposure,” stated lead study author Christoph Schwab, MD in a press release.
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