title: The management of persistent congenital occlusion of the nasolacrimal duct: after unsuccessful probing.
abstract: Persistence of congenital occlusion of the nasolacrimal duct in spite of apparently successful probings is usually due to separation of the nasal mucosa in the region of the exit of this duct and failure to rupture the membrane that causes the occlusion. Cutting of this membrane through a nasal speculum is a simple method that often leads to a permanent cure.
mesh_terms: D003608:Dacryocystorhinostomy; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007507:Therapeutic Irrigation