Nasolacrimal duct obstruction classified by dacryoendoscopy and treated with inferior meatal dacryorhinotomy: Part II. Inferior meatal dacryorhinotomy.
OBJECTIVE
To report the performance of a newly devised technique, inferior meatal dacryorhinotomy (iDR), for membranous PNLDO (lower PNLDO).


METHODS
Retrospective, nonrandomized clinical trial.


METHODS
Forty cases (37 patients) who ranged in age from 42 to 89 years old with lower PNLDO were treated by iDR, which is intubation that is assisted by dacryoendoscope, nasal endoscope, and radio-frequency scalpel. The obstructed site was incised with a radio-frequency scalpel without osseous ablation, after which silicone tubes were placed temporarily.


RESULTS
Postoperative follow-up evaluation showed that the success rate was 87.5% after 6 months to 2 years.


CONCLUSIONS
The iDR technique is minimally invasive and effective for lower PNLDO.
Sasaki
Tsugihisa
T
Department of Ophthalmology, Kanazawa University School of Medicine, Kanazawa, Ishikawa 920-8641, Japan. sasatsug@med.kanazawa-u.ac.jp
Nagata
Yuuko
Y
Sugiyama
Kazuhisa
K
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003608:Dacryocystorhinostomy; D003941:Diagnostic Techniques, Ophthalmological; D004724:Endoscopy / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007767:Lacrimal Duct Obstruction / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D019060:Minimally Invasive Surgical Procedures; D009301:Nasolacrimal Duct / Q000473:pathology / Q000601:surgery*; D013508:Ophthalmologic Surgical Procedures; D013517:Otorhinolaryngologic Surgical Procedures; D012189:Retrospective Studies; D016896:Treatment Outcome