title: A report of 131 cases of endoscopic laser lacrimal surgery.
abstract: BACKGROUND
  Despite the many advantages of endoscopic laser dacryocystorhinostomy, clinical data have been sparse, and the effectiveness of this procedure has not been fully evaluated.
  
  
  METHODS
  Among 127 patients (131 procedures) who underwent endoscopic laser lacrimal surgery, 92 procedures with longer than 3 months of follow-up were evaluated. The authors used endoscopic sinus surgery equipment, radiosurgical instruments, otodrill, microrongeur, holmium:YAG and contact neodymium:YAG lasers.
  
  
  RESULTS
  After the primary operation, 71 (77.2%) of 92 cases were symptom-free and had positive results on primary Jones dye test. With simple revision of failed cases, 88 (95.7%) of 92 cases were treated successfully.
  
  
  CONCLUSIONS
  Improvement of surgical technique and use of adequate surgical instruments were essential in increasing the rate of success. Endoscopic laser surgery is useful in treating patients with lacrimal passage obstruction, but a longer period of observation is necessary to confirm its effectiveness.
authors.affiliation: Kong Eye Clinic, Seoul, Korea.
authors.forename: Y T
authors.initials: YT
authors.lastname: Kong
authors.forename: T I
authors.initials: TI
authors.lastname: Kim
authors.forename: B W
authors.initials: BW
authors.lastname: Kong
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D003608:Dacryocystorhinostomy / Q000295:instrumentation / Q000379:methods*; D004724:Endoscopy; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007767:Lacrimal Duct Obstruction / Q000209:etiology; D053685:Laser Therapy / Q000295:instrumentation / Q000379:methods; D008297:Male; D008875:Middle Aged; D013997:Time Factors