Tears serve several key roles in your body. They keep your eyes lubricated and help to wash away foreign particles and dust. They are also a component of your immune system that protect you against infection.
Glands under the skin of your upper eyelids produce tears, which contain water and salt. When you blink, tears spread and keep your eyes moist. Other glands produce oils that keep tears from evaporating too fast or from spilling out of your eyes.
Tears are normally discharged through your tear ducts and then evaporate. When you produce too many tears, they overwhelm your tear ducts, and you develop watery eyes.
Most of the time, watery eyes resolve without treatment, but the condition can sometimes become a chronic problem.
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