While not malignant, eye freckles could indicate the presence or risk of sunlight-triggered eye diseases like cataract or macular degeneration, researchers said.
Over 600 swimmers at public pools in Styria, Austria had their eyes examined for freckles and filled out a questionnaire that asked about their lifetime sun exposure and sun-protection habits.
The researchers from Medical University of Graz in Austria found that the development of eye freckles correlated with increasing age, lifetime number of sunburns and a history of severe sunburns resulting in blisters.
One unexpected finding was the uneven positioning of freckles on the eye. Freckles were most commonly found in the lower outer quadrant (away from the nose) of each eye.
The researchers hypothesised this may be because the eyebrow and nose shield the upper and inner quadrants of the eye from the Sun, lowering exposure and the risk of developing freckles.
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