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  • Title: Ahmed Versus Baerveldt Glaucoma Drainage Device in Uveitic Glaucoma: A Retrospective Comparative Study.
    Author: Sinha S, Ganjei AY, McWatters Z, Lee D, Moster MR, Myers JS, Kolomeyer N, Mantravadi AV, Pro MJ, Razeghinejad R.
    Journal: J Glaucoma; 2020 Sep; 29(9):750-755. PubMed ID: 32590449.
    Abstract:
    PRECIS: Baerveldt glaucoma drainage device demonstrated a greater reduction in intraocular pressure (IOP) than Ahmed in patients with uveitic glaucoma. The most common cause of failure was uncontrolled IOP in Ahmed and hypotony in the Baerveldt group. PURPOSE: To compare the efficacy and safety of Ahmed and Baerveldt glaucoma drainage devices in uveitic glaucoma. MATERIALS AND METHODS: The retrospective comparative study included patients with uveitic glaucoma who underwent Ahmed or Baerveldt glaucoma drainage device implantation with a minimum follow-up of 3 months. Success was defined as IOP ≥6 and ≤21 mm Hg and >20% reduction on 2 consecutive visits after the third month with (qualified success) or without (complete success) medications and no further glaucoma surgery or loss of vision. IOP, number of medications, visual acuity, complications, and interventions were compared between groups. RESULTS: In total, 137 eyes of 122 patients (67 Ahmed, 70 Baerveldt) were included. The preoperative IOP and number of medications in the Ahmed group (32.7±10.3 mm Hg; 4.1±1.3) were similar to Baerveldt (32.1±10.2 mm Hg; 4.3±1.3; P=0.73, 0.35). These at the last follow-up were (18.1±9.8 mm Hg; 2.1±1) in Ahmed and (12.7±6.9 mm Hg; 1.3±1.3) in Baerveldt groups (P=0.04, 0.01). The Baerveldt had greater IOP reduction (60.3% vs. 44.5%) and complete success rate (30% vs. 9%) with higher complication rate (51.4% vs. 20.9%) (all P≤0.05). The de novo glaucoma reoperation rate was 19% in the Ahmed group and 4% in the Baerveldt group (P=0.006). Hypotony resulted in failure in 7 eyes (10%) in the Baerveldt group and none in the Ahmed group (P=0.013). CONCLUSIONS: Higher complete success rate and significantly greater reduction in mean IOP and number of medications were observed in the Baerveldt group, but with a higher rate of complications including hypotony.
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