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Blocked Tear Duct
Nasolacrimal Duct Blockage
A block tear duct, also known as nasolacrimal duct blockage, is the obstruction of a duck's tear ducts. It occurs as a result of narrowing of the ducts, due to thickening, swelling, inflammation, abnormal tissue growth (such as nasal polyps), or tumors. Depending on the cause, sometimes the early stages may just require keeping the eye clean to prevent infection. However, in many cases the duck will require their tear duct to be flushed. This is done by your veterinarian while the duck is under general anesthesia.