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  • Title: Long-term effectiveness and safety of trabecular microbypass stent implantation with cataract surgery in patients with glaucoma or ocular hypertension: Five-year outcomes.
    Author: Neuhann TH, Hornbeak DM, Neuhann RT, Giamporcaro JE.
    Journal: J Cataract Refract Surg; 2019 Mar; 45(3):312-320. PubMed ID: 30851807.
    Abstract:
    PURPOSE: To assess 5-year outcomes after implantation of 1 trabecular microbypass stent during cataract surgery in eyes with open-angle glaucoma (OAG) or ocular hypertension. SETTING: Private ophthalmology clinic (AaM Augenklinik am Marienplatz, Munich, Germany). DESIGN: Prospective nonrandomized consecutive case series. METHODS: One trabecular microbypass stent was implanted after phacoemulsification cataract surgery by one surgeon over 4 years. Evaluations included intraocular pressure (IOP), medications, corrected distance visual acuity, cup-to-disc ratio, complications, and adverse events. RESULTS: This case series included 65 eyes of 43 patients with OAG (including primary, n = 39; pseudoexfoliative, n = 14; secondary uveitic, n = 1; posttraumatic, n = 1) or ocular hypertension (n = 10). Thirty-eight percent of eyes had previous trabeculectomy and/or glaucoma laser procedures, and 68% were on 2 or more preoperative medications. Twenty-six eyes completed follow-up through 5 years, and follow-up is ongoing. Among eyes without additional glaucoma surgery, the mean year 5 IOP decreased by 38% to 14.7 mm Hg ± 3.0 (SD) versus 23.7 ± 7.4 mm Hg preoperatively; 92% of eyes had a mean year 5 IOP of 18 mm Hg or lower and 65% had an IOP of 15 mm Hg or lower. Medications were reduced by 75% to 0.5 ± 0.9 medications versus 2.0 ± 1.0 preoperatively, with 4% of eyes on 3 to 4 medications versus 28% preoperatively, and 69% medication-free versus 5% preoperatively. The mean IOP at all postoperative visits was 16.0 mm Hg or lower and the mean medication number was 0.5 or less. Safety was favorable throughout the follow-up. CONCLUSIONS: In a real-life cohort of eyes with OAG or ocular hypertension, substantial, durable, and safe IOP and medication reductions were achieved through 5 years after trabecular microbypass stent implantation with cataract surgery.
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