title: Efficacy of endoscopic lacrimal duct recanalization using microendoscope.
abstract: OBJECTIVE
  To describe a new endoscopic procedure to restore the passage of tears in an obstructed lacrimal drainage system and to compare its efficacy with the standard external dacryocystorhinostomy (SE-DCR).
  
  
  METHODS
  Patients with complete and partial primary acquired nasolacrimal duct obstruction (PANDO) were randomly allocated to 2 treatment groups using completely randomized design. The first group was treated using endoscopic lacrimal duct recanalization (ELDR), while the second group was treated using SE-DCR. Follow-up was conducted for at least 6 months and evaluated for anatomical and functional patency. Complications were also noted for both groups.
  
  
  RESULTS
  A total of 86 patients underwent ELDR, 60 of whom had complete PANDO, while 26 patients had partial PANDO. Eighty patients underwent SE-DCR; 58 had complete PANDO, and 22 had partial PANDO. The combined success rate in terms of anatomical patency for ELDR was 93.02% (95% confidence interval [CI], 0.88-98) compared with 93.75% (95% CI, 0.87-90) for SE-DCR (p = 0.85). Meanwhile, the combined success rate (functional patency) for ELDR is 84.88% (95% CI, 0.77-93) versus 90.00% (95% CI, 0.83-97) for SE-DCR (p = 0.32).
  
  
  CONCLUSIONS
  ELDR using microendoscope is as efficacious as SE-DCR, without its associated major complications.
authors.affiliation: Department of Ophthalmology, University of Santo Tomas Hospital, University of Santo Tomas, Sampaloc, Manila, Philippines. rmjavate_md@yahoo.com
authors.forename: Reynaldo M
authors.initials: RM
authors.lastname: Javate
authors.forename: Ferdinand G
authors.initials: FG
authors.lastname: Pamintuan
authors.forename: Raul T
authors.initials: RT
authors.lastname: Cruz
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003608:Dacryocystorhinostomy / Q000379:methods; D019723:Endoscopes; D004724:Endoscopy / Q000295:instrumentation / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007767:Lacrimal Duct Obstruction / Q000378:metabolism / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D009301:Nasolacrimal Duct / Q000503:physiopathology / Q000601:surgery*; D011446:Prospective Studies; D013666:Tears / Q000378:metabolism; D016896:Treatment Outcome