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Term:
Parent Terms Term With Siblings Child Terms
absent nasolacrimal duct  
nasolacrimal duct obstruction 
any impediment or blockage of the paired channels leading from the lacrimal sacs to the inferior meatus of the nose, through which tears are conducted through the nasal cavity; may be either congenital or acquired; obstruction of the nasolacrimal duct leads to the excess overflow of tears called epiphora

Synonyms
Exact Synonyms: nasolacrimal duct occlusion ;   nasolacrymal duct obstruction ;   nasolacrymal duct occlusion ;   tear-duct blockage
Xrefs: HP:0000579
Definition Sources: https://orcid.org/0000-0002-6490-7723

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