Dry eye is usually the result of poor quality tears, which evaporate too quickly, leaving the eye uncomfortably dry. The chance of this increases with age, in part because the body’s tear-producing glands begin to function less efficiently. Less commonly, people simply don’t produce enough tears, sometimes because of a separate medical condition.
Other causes may include medication side effects, Lasik surgery aftereffects, eyelid inflammation, and more. Often, there’s more than one reason.
Source: Consumer Reports on Health July 2018 Marvin M. Lipman, M.D., Consumer Reports chief medical advisor.
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