Dry eye syndrome is a multifactorial ocular disease that is poorly understood. Discomfort, visual disturbance, and tear film instability are common complaints. Left untreated, dry eye syndrome is usually progressive in nature.
Studies have shown that nearly 5 million Americans age 50 or older are significantly affected by dry eye disease. Women are affected twice as often as men, and the disease appears to be more common in those 45 years of age and older. The Beaver Dam Eye Study showed that age was the biggest contributory factor to dry eye syndrome.
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