Dacryocystography in obstruction of the lacrimal passages.
D003287:Contrast Media; D006801:Humans; D007765:Lacrimal Apparatus / Q000000981:diagnostic imaging*; D007767:Lacrimal Duct Obstruction / Q000000981:diagnostic imaging*; D008722:Methods; D011187:Posture; D011859:Radiography
D003287:Contrast Media