(HealthDay News) -- Watery eyes can be caused by a variety of factors, including an eye infection, allergy or irritation. Watery eyes also can signal a more serious problem, including a blocked tear duct that prevents tears from draining normally.

The U.S. National Library of Medicine recommends that you see your doctor if, in addition to watery eyes, you have any of these symptoms:

• Persistent tearing without apparent cause.
• Pain in the eye, especially when it tears.
• Soreness around the eyes or sinuses.
• Redness in the eye, or significant discharge from the eye.