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Updated: Jul 15, 2026

Transcanalicular Diode Laser-assisted Dacryocystorhinostomy for the Treatment of Primary Acquired Nasolacrimal Duct Obstruction
Published on: October 13, 2017
Selective non-intubation of a silicone tube in external dacryocystorhinostomy
Ho Kyung Choung1, Sang In Khwarg
1Department of Ophthalmology, Seoul National University Boramae Hospital, Seoul, Korea.
Purpose:
To evaluate whether silicone tube insertion is always necessary in external dacryocystorhinostomy (DCR).
Methods:
During external DCR for primary nasolacrimal duct obstruction carried out between January 2001 and October 2004, silicone intubation was not performed selectively if the lacrimal sac was large and the nasal cavity was not severely narrowed.
Results:
Of a total of 166 DCR cases in 153 patients, no silicone tube was placed in 74 eyes of 69 patients (44.6%). Anatomic patency of rhinostomy was achieved in all non-intubation group eyes. However, four (6.7%) of these 69 eyes showed persistent epiphora even with anatomic patency.
Conclusions:
Silicone tubing can be avoided in about 50% of cases of external DCR without detrimentally affecting the success rate. Cases in which intubation was avoided had a large lacrimal sac and a wide nasal cavity.
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