title: Transcanalicular laser-assisted revision of failed dacryocystorhinostomy.
abstract: OBJECTIVE
  Despite the high success rate of external dacryocystorhinostomy (DCR), recurrent tearing after DCR can be troublesome. The authors performed transcanalicular revision in 6 patients with failed DCR.
  
  
  METHODS
  With the use of a continuous wave Nd:YAG laser with a sclerostomy probe, the internal ostium was reopened by a transcanalicular approach. The authors applied 0.4 mg/ml of mitomycin-C around the opening for 5 minutes intranasally and inserted a silicone tube as a stent.
  
  
  RESULTS
  A total of 7 operations were performed in 6 patients. The operation was successful after the first revision in 5 of the 6 patients, but 1 of the patients required a second procedure.
  
  
  CONCLUSIONS
  The transcanalicular laser-assisted revision has several advantages. It is simple and fast, skin incision is avoided, there is good hemostasis, it is less traumatic, and there is less postoperative morbidity.
authors.affiliation: Department of Ophthalmology, College of Medicine, Sung Kyun Kwan University, Kangbuk Samsung Hospital, Seoul, Korea.
authors.forename: K I
authors.initials: KI
authors.lastname: Woo
authors.forename: S H
authors.initials: SH
authors.lastname: Moon
authors.forename: Y D
authors.initials: YD
authors.lastname: Kim
mesh_terms: D000328:Adult; D000368:Aged; D003608:Dacryocystorhinostomy / Q000379:methods*; D004724:Endoscopy / Q000379:methods*; D005260:Female; D006801:Humans; D053685:Laser Therapy; D008297:Male; D008875:Middle Aged; D009301:Nasolacrimal Duct / Q000601:surgery*; D012008:Recurrence; D012086:Reoperation; D012189:Retrospective Studies; D017211:Treatment Failure; D016896:Treatment Outcome