title: Punctual and canalicular agenesis presented with congenital nasolacrimal duct obstruction.
authors.forename: Jia-Kang
authors.initials: JK
authors.lastname: Wang
authors.forename: Pei-Ching
authors.initials: PC
authors.lastname: Lai
authors.forename: Shu-Lang
authors.initials: SL
authors.lastname: Liao
mesh_terms: D002675:Child, Preschool; D006801:Humans; D007765:Lacrimal Apparatus / Q000002:abnormalities*; D007767:Lacrimal Duct Obstruction / Q000151:congenital* / Q000209:etiology*; D008297:Male; D009301:Nasolacrimal Duct