Watery Eyes


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Definition

Watery eyes means you have too many tears draining from the eyes. Tears help keep the surface of the eye moist. They wash away particles and foreign objects in the eye.


Alternative Names

Epiphora; Tearing - increased


Common Causes

Your eyes are always making tears. These tears eave the eye through a small hole in the corner of the eye called the tear duct.

Causes of watery eyes include:

  • Allergy to mold, dander, dust
  • Blepharitis (swelling along the edge of the eyelid)
  • Blockage of the tear duct
  • Conjunctivitis
  • Smog or chemicals in the air or wind
  • Bright light
  • Eyelid turning inward or outward
  • Something in the eye (such as dust or sand)
  • Scrape on the eye
  • Infection
  • Inward-growing eyelashes
  • Irritation

Increased tearing sometimes happens with:

  • Eyestrain
  • Laughing
  • Vomiting
  • Yawning

Oddly enough, one of the most common causes of excess tearing is dry eyes. Drying causes the eyes to become uncomfortable, which stimulates the body to produce too many tears. One of the main tests for tearing is to check whether the eyes are too dry.


References

Hurwitz JJ. The lacrimal drainage system. In: Yanoff M, Duker JS, eds. Ophthalmology. 3rd ed. St. Louis, Mo: Mosby Elsevier; 2008:chap 12.


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Review Date: 11/7/2011
Reviewed By: Neil K. Kaneshiro, MD, MHA, Clinical Assistant Professor of Pediatrics, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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Last Updated 2/21/2012
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