title: Transcanalicular diode laser-assisted dacryocystorhinostomy.
abstract: OBJECTIVE
  We present a prospective, non-comparative case series study of 126 consecutive diode laser-assisted transcanalicular dacryocystorhinostomy (TCL-DCR) procedures on 122 patients. We analyzed success rate, procedure time and amount of laser energy needed for a 5 mm osteotomy.
  
  
  METHODS
  One hundred and twenty-two patients with nasolacrimal duct obstruction were included in the study. The procedure was performed under general anesthesia, and the nasal mucosa was anesthetized. An endoscope was used for examination of the lacrimal pathways. The site of osteotomy was determined with transillumination of the lateral nasal wall. We achieved osteotomy by applying laser energy via an optic fiber. We used a 980 nm diode laser with power of 10 Watts. We inserted a bicanalicular silicone stent as the last step. Success of procedure was absence of epiphora (subjective), or patency of the lacrimal drainage system on irrigation (objective).
  
  
  RESULTS
  We performed 126 successive endoscopic laser (EL-DCR) with bicanalicular intubation in 122 patients. The average procedure time was 12 min, and on average 245 Joules of laser energy was needed. The silicone stents were removed three to eight months after surgery. We observed absence of epiphora and a patent nasolacrimal duct on irrigation in 105 out of 126 treated eyes. Eighteen patients had epiphora despite a patent nasolacrimal duct on irrigation. This yields a success rate of 83.3%, with an average follow-up period of 12 months.
  
  
  CONCLUSIONS
  The 980 nm EL-DCR with bicanalicular intubation is a new contribution to the field of lacrimal surgery. It is a minimally invasive quick procedure yielding a high success rate.
authors.affiliation: University Eye Hospital, Medical Centre, Ljubljana, Slovenia.
authors.forename: Brigita
authors.initials: B
authors.lastname: Drnovsek-Olup
authors.forename: Matej
authors.initials: M
authors.lastname: Beltram
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003608:Dacryocystorhinostomy / Q000379:methods*; D004724:Endoscopy; D005260:Female; D006801:Humans; D053685:Laser Therapy / Q000379:methods*; D054023:Lasers, Semiconductor; D008297:Male; D008875:Middle Aged; D009301:Nasolacrimal Duct / Q000601:surgery; D010027:Osteotomy / Q000379:methods; D055815:Young Adult