Glatt, H J Failure of collagen plugs to predict epiphora after permanent punctal occlusion. [electronic resource] - Ophthalmic surgery Apr 1992 - 292-3 p. digital Publication Type: Case Reports; Journal Article ISSN: 0022-023X Subjects--Topical Terms: AgedCollagenDacryocystorhinostomyElectrocoagulationFemaleHumansKeratoconjunctivitis Sicca--surgeryProsthesis FailureTears--metabolism