Abstract
Purpose
To study the indications for and effectiveness of Nunchaku-style silicone tube intubation (NSTI) in treating primary acquired lacrimal drainage obstruction (PALDO).
Methods
In this interventional cohort study, 235 consecutive patients in 1 institution who had complete lacrimal obstruction were investigated. Of those, 212 PALDO patients were enrolled, and 156 of the PALDO patients ultimately satisfied our treatment protocol and were then followed up for 12 months postsurgery. Patients without dacryocystitis underwent NSTI, while those with dacryocystitis underwent NSTI or endonasal dacryocystorhinostomy (EN-DCR) using the NST as a stent. The tubes were left in place for 8 weeks, and all patients received identical postoperative care. Resolution was deemed as patency assessed by irrigation. Logistic regression analyses were performed to compare the success of NSTI for upper (puncta and canaliculus) and lower (lacrimal sac and nasolacrimal duct) obstruction, NSTI for lower obstruction with and without dacryocystitis, and NSTI and EN-DCR for lower obstruction with dacryocystitis.
Results
Comparison of the success rates at 12 months postsurgery showed significance as follows: treatment with NSTI was more successful for upper obstruction (94.6 %) than for lower obstruction (71.4 %) [odds ratio (OR) 8.23; P < 0.01]; treatment with NSTI was more successful for lower obstruction without dacryocystitis (82.9 %) than for dacryocystitis (52.4 %) (OR 4.96; P < 0.05); and treatment with EN-DCR (95.5 %) was more successful than NSTI (52.4 %) for treating lower obstruction with dacryocystitis (OR 16.99; P < 0.001).
Conclusions
NSTI is effective for treating PALDO; however, EN-DCR is more effective for treating PALDO cases complicated by dacryocystitis.
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Acknowledgments
The authors wish to thank John Bush for reviewing the manuscript.
Conflicts of interest
M. Mimura, None; M. Ueki, None; H. Oku, None; B. Sato, None; T. Ikeda, None.
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Mimura, M., Ueki, M., Oku, H. et al. Indications for and effects of Nunchaku-style silicone tube intubation for primary acquired lacrimal drainage obstruction. Jpn J Ophthalmol 59, 266–272 (2015). https://doi.org/10.1007/s10384-015-0381-5
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DOI: https://doi.org/10.1007/s10384-015-0381-5