THE BIOLOGICAL EFFECTS OF UV‐B ON THE EYE

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Abstract
–The adverse effects of ultraviolet‐B (UV‐B) radiation on the eye have been suspected but only recently have they been quantified by epidemiologic studies in humans. These studies became possible as methods to qualify individual ocular UV‐B exposure were developed. A consistent dose‐dependent association between ocular UV‐B exposure and two common types of cataract (cortical and posterior subcapsular) has been shown. Although suggested by experimental studies, at present, evidence does not exist to link UV‐B exposure to senile macular degeneration. Ocular exposure to UV‐B is also associated with several corneal changes, pterygium, climatic droplet keratopathy, and acute photokeratitis (snow blindness). Significant reduction in ocular UV‐B exposure results from the use of eyeglasses and hats.