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dacryocystorhinostomy

n. A surgical procedure to restore the flow of tears into the nose from the lacrimal sac when the nasolacrimal duct does not function.

Wikipedia
Dacryocystorhinostomy

Dacryocystorhinostomy (DCR) is a surgical procedure to restore the flow of tears into the nose from the lacrimal sac when the nasolacrimal duct does not function.