 Health Guide Drug Guide Tear duct blockage Tears are produced by the lacrimal gland located in the upper outer portion of each eye. Tears drain down and cascade over the eye. Tears then drain into the tear ducts and down into the nasolacrimal duct located on the inner portion of each eye. Tears will accumulate and overflow onto the cheek if there is an excessive amount of tears produced such as in emotional crying, or if the duct is blocked. 
Review Date:
8/1/2008 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. The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997-
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