X-ray study of the nasolacrimal canal inlet.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003607:Dacryocystitis / Q000209:etiology*; D005260:Female; D006801:Humans; D007765:Lacrimal Apparatus; D008297:Male; D008875:Middle Aged; D011859:Radiography