As a clinical diagnosis, Dry Eye Syndrome (DES) may not appear to be a major health issue, but in a study published in the March issue of the American Journal of Ophthalmology, researchers found that DES had a significant impact on quality of life. With an estimated prevalence of 7.8 percent of women and 4.7 percent of men over 50, it affects 4.8 million people in the United States. Although some risk factors have been identified, the cause of DES is still largely unknown.
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