Lacrimal duct stenosis involves narrowing of a tear duct (lacrimal duct). This condition can occur in children and adults. This fact sheet will focus on lacrimal duct stenosis in infants.

Lacrimal Duct
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The lacrimal duct (in blue) drains tears from the eye down into the nose. The opening of the ducts are near the inner corner of the eye.
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In some babies, problems in normal development can cause lacrimal duct obstruction. A thin membrane may cover the opening of the duct into the nose.