Tear Duct Blockage Anatomy
To better understand nasolacrimal stenosis, it helps to understand the anatomy of lacrimal system.
The flow of tears in the eye normally moves from the temple, toward the nose. Near the nose, the tears flow into a small opening, called the nasolacrimal duct. Tears drain into the nasolacrimal duct and then into the nose. Normally, excessive tears cause a runny nose.
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