Endoscopic transnasal canaliculorhinostomy for refractory common canalicular obstruction with an unidentifiable lacrimal sac
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Wen-Can Wu. Department of Orbital & Oculoplastic Surgery, Eye Hospital of Wenzhou Medical University, No.270 Xueyuan Xi Road, Wenzhou 325027, Zhejiang Province, China. wuwencan118@163.com.

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Supported by the Natural Key Research and Development Program of China (No.2016YFC1101200); the National Natural Science Foundation of China (No.81770926).

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    Abstract:

    AIM: To describe the role of endoscopic transnasal canaliculorhinostomy (ETC) in refractory common canalicular obstruction (CCO) associated with an absent or unidentifiable lacrimal sac. METHODS: The records of patients with refractory CCO who underwent ETC at the Eye Hospital of Wenzhou Medical University from October 2007 to December 2016 were retrospectively reviewed. RESULTS: Fifty-six patients (56 eyes) with refractory CCO were recruited into the study. Eight patients were excluded due to the presence of a residual lacrimal sac or failure to complete the follow-up duration. The anatomic and functional success rates were both 85.4% (41/48) at a mean follow-up of 18.6mo. Five cases failed as a result of ostial synechia and two failed because of ostial obstruction by granulation. Postoperative complications included mild nasal bleeding in 5 cases, dried nasal feeling in 8 cases, and olfactory dysfunction in 4 cases. CONCLUSION: Although being surgically challenging, ETC has comparable findings to its external approach counterpart or conjunctivodacryocystorhinostomy (CDCR) with Jones tube. And it may prove to be a novel alternate surgical technique for patients with refractory CCO without identifiable lacrimal sac.

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Zhao-Qi Pan, Jian-Ju Liu, Xian-Ke Jia, et al. Endoscopic transnasal canaliculorhinostomy for refractory common canalicular obstruction with an unidentifiable lacrimal sac. Int J Ophthalmol, 2020,13(8):1238-1243

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Publication History
  • Received:July 24,2019
  • Revised:February 12,2020
  • Adopted:
  • Online: June 22,2020
  • Published: