Korean J Ophthalmol > Volume 19(4); 2005 > Article
Korean Journal of Ophthalmology 2005;19(4):252-257.
DOI: https://doi.org/10.3341/kjo.2005.19.4.252    Published online December 30, 2005.
Clinicopathologic Findings after Nasolacrimal Polyurethane Stent Implantations.
Jeong Heon Lee, Mi Sun Kang, Jae Wook Yang
1Department of Ophthalmology, Inje University College of Medicine, Busan, Korea. eyeyang@inje.ac.kr
2Department of Pathology, Inje University College of Medicine, Busan, Korea.
3Paik Institute for Clinical Research, Inje University, Busan, Korea.
Abstract
PURPOSE
To evaluate the results of nasolacrimal polyurethane stent implantations for the treatment of primary acquired nasolacrimal duct obstruction, and to determine the effects of various surgical procedures, including stent removal, in subsequent nasolacrimal duct obstruction. METHODS: This study included 15 patients who had nasolacrimal polyurethane implantations for the treatment of primary acquired nasolacrimal duct obstruction. Occluded stents were removed either by nasal endoscopy or during dacryocystorhinostomy (DCR). Cultures and biopsies were performed on the removed stents, and the results of the secondary DCR were analyzed for a 6-month follow-up period. RESULTS: During stent removal surgery, various degrees of chronic inflammatory reaction and fibrous tissue formation were detected in the lacrimal sac and nasolacrimal duct. Formations of granuloma and fibrous tissue were found in 15 eyes, and culture-positive reaction were found in nine of the 15 eyes. Conventional dacryocystorhinostomy surgery was performed in nine of the 15 eyes and a silicone tube was located at the canaliculi. Subjective and objective outcome were favorable in 13 of the 15 eyes. CONCLUSIONS: The success rate of nasolacrimal polyurethane stent implantation for the treatment of primary acquired nasolacrimal duct obstruction is low. This may result from a chronic inflammatroy reaction. Despite the low success rate of nasolacrimal polyurethane stent implantation, the success rate of endonasal DCR as a subsequent surgery is favorable.
Key Words: Endonasal DCR;Monocanalicular stenting;Nasolacrimal duct obstruction;Nasolacrimal polyurethane stent;Silicone tube intubation


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