Publication: Non endoscopic endonasal dacryocystorhinostomy versus external dacryocystorhinostomy
Date
2008
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Kathmandu University
Abstract
Abstract
Aims and Objectives: To compare the success rates of non endoscopic endonasal dacryocystorhinostomy and
conventional external dacryocystorhinostomy for the surgical management of primary acquired nasolacrimal duct
obstruction.
Materials and methods: A retrospective, nonrandomized, comparative interventional case series of 302 patients who
underwent either endonasal or external dacryocystorhinostomy over a period of 2 years. All surgeries were performed
by a single surgeon and patients with primary nasolacrimal duct obstruction with a minimum of 6 months post operative
follow up were included in the study. While external dacryocystorhinostomy was performed using traditional technique,
endonasal dacryocystorhinostomy was performed using direct method of nonendoscopic visualization.
Results: Of the 302 cases included in the study 165 patients had endonasal dacryocystorhinostomy whereas 137 underwent
external dacryocystorhinostomy. Success was de ned by resolution of symptoms of tearing, a negative uorescein dye
disappearance test and patency of the canalicular system on lacrimal irrigation. In the external dacryocystorhinostomy
group 124 (90.5%) patients had surgical success whereas 146 (88.5%) of the endonasal dacryocystorhinostomy patients
had successful outcome. The overall success rate was 89.4%, and the difference of surgical success between the two
groups was not statistically signi cant ( P=0.57).
Conclusion: Non endoscopic endonasal dacryocystorhinostomy gives surgical results comparable to those of external
dacryocystorhinostomy and is a viable alternative where dacryocystorhinostomy is indicated for primary acquired
nasolacrimal duct obstruction.
Key words: Endonasal Dacryocystorhinostomy (ENDCR), External Dacryocystorhinostomy (EXDCR), Primary
acquired nasolacrimal duct obstruction (PANLDO)
Description
BR Sharma
Consultant Ophthalmologist and Chief Oculoplasty Unit, Lumbini Eye Institute, Siddharthanagar, Nepal, Associate Professor, National Academy of Medical Sciences, Kathmandu, Nepal.