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Trabecular microbypass stent combined with phacoemulsification in patients with open-angle glaucoma, 1-year outcome in a Taiwanese population

 Department of Ophthalmology, Chang Gung Memorial Hospital; Chang Gung University College of Medicine, Taoyuan, Taiwan

Correspondence Address:
Wei-Wen Su,
5 Fuhsin Street, Kweishan, Taoyuan 333
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/2211-5056.364567

PURPOSE: The purpose of this study was to evaluate the safety and efficacy of one trabecular microbypass stent (first generation iStent) combined with phacoemulsification cataract surgery (phaco) in eyes with open-angle glaucoma (OAG) in a Taiwanese population. MATERIALS AND METHODS: One trabecular microbypass stent was implanted after phacoemulsification cataract surgery by one surgeon. Intraocular pressure (IOP), medications, corrected distance visual acuity, complications, and adverse events were evaluated. RESULTS: This case series included 28 eyes of 25 patients with OAG (19 primary open-angle glaucoma [POAG] and 9 normal tension glaucoma [NTG]). None had previous trabeculectomy or laser trabeculoplasty. At 1 year, the mean IOP decreased from 19.34 ± 3.92 mmHg to 15.84 ± 3.05 mmHg, and the mean number of glaucoma medications decreased from 1.82 ± 1.12 to 0.79 ± 1.17 (both P < 0.001). Longer survival was observed in the NTG eyes (NTG: 11.67 ± 1.00 months, POAG: 9.53 ± 3.78 months, P = 0.031). iStent reposition was performed in one eye, and four eyes received laser treatment for stent occlusion. None had secondary glaucoma surgery. CONCLUSION: Combined phacoemulsification and iStent implantations are a safe and effective way in reducing IOP and medication burden in patients with OAG, especially NTG.

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