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Cindy Xin Zheng, Michael Waisbourd, Priyanka Gogte, Yang Dai, Remy Serge Manzi Muhire, Marlene Moster; Implantation of trabecular micro-bypass stent (iStent) using a novel “landing strip” technique. Invest. Ophthalmol. Vis. Sci. 2017;58(8):4983.
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© ARVO (1962-2015); The Authors (2016-present)
To describe a novel technique of creating a landing strip within the trabecular meshwork to guide trabecular micro-bypass stent (iStent) implantation in patients who underwent phacoemulsification.
Thirty-four eyes from 30 patients who underwent iStent implantation after phacoemulsification were included in our retrospective study. All iStents were implanted via the landing strip technique. A 25-gauge microvitreoretinal blade was used to bisect the trabecular meshwork to less than 1 clock-hour, effectively creating a landing strip. The iStent applicator was pressed along the landing strip and then the stent was released into the trabecular meshwork.
Of the 34 eyes with iStent implantation, 27 (79%) eyes had primary open-angle glaucoma, 6 (18%) eyes had pseudoexfoliation glaucoma, and 1 (3%) eye had ocular hypertension. At 6-month follow-up (n=17), the mean number of hypotensive medications decreased from 2.2±1.2 at baseline to 0.8±1.3 (P=0.05) and mean intraocular pressure decreased from 19.7±4.1mmHg at baseline to 16.7±2.1mmHg (P=0.58). Two eyes (5.9%) required subsequent trabeculectomy.
The landing strip technique appears to be an effective way to assist with iStent implantation.
This is an abstract that was submitted for the 2017 ARVO Annual Meeting, held in Baltimore, MD, May 7-11, 2017.
Landing strip technique for iStent implantation. A) A 25-gauge microvitreoretinal blade is used to bisect the nasal trabecular meshwork to create a landing strip. B) The landing strip improves visualization of the trabecular meshwork by providing a visual clue for the precise location of iStent implantation. C) The iStent applicator is pressed along the landing strip. D) The iStent is released from the applicator and directly implanted into the trabecular meshwork.
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