Tsugihisa Sasaki1, Yuuko Nagata, Kazuhisa Sugiyama. 1. Department of Ophthalmology, Kanazawa University School of Medicine, Kanazawa, Ishikawa 920-8641, Japan. sasatsug@med.kanazawa-u.ac.jp
Abstract
PURPOSE: To investigate the site of primary nasolacrimal duct obstruction (PNLDO) using a dacryoendoscope and nasal endoscope. DESIGN: Retrospective, observational case series. METHODS: After local anesthesia, dacryoendoscopy and nasal endoscopy were performed in 149 cases (138 Japanese subjects) of PNLDO. Membranous nasolacrimal duct obstruction was termed as lower PNLDO, and occlusion at sac/duct junction termed as higher PNLDO. RESULTS: The incidence of lower PNLDO was 26.8% (40 of 149 cases), and 109 cases (73.2%) were diagnosed with higher PNLDO. CONCLUSIONS: The dacryoendoscope is extremely useful to observe directly and evaluate the site of obstruction with accuracy in PNLDO. The higher and lower PNLDO may have a different etiologies.
PURPOSE: To investigate the site of primary nasolacrimal duct obstruction (PNLDO) using a dacryoendoscope and nasal endoscope. DESIGN: Retrospective, observational case series. METHODS: After local anesthesia, dacryoendoscopy and nasal endoscopy were performed in 149 cases (138 Japanese subjects) of PNLDO. Membranous nasolacrimal duct obstruction was termed as lower PNLDO, and occlusion at sac/duct junction termed as higher PNLDO. RESULTS: The incidence of lower PNLDO was 26.8% (40 of 149 cases), and 109 cases (73.2%) were diagnosed with higher PNLDO. CONCLUSIONS: The dacryoendoscope is extremely useful to observe directly and evaluate the site of obstruction with accuracy in PNLDO. The higher and lower PNLDO may have a different etiologies.