Abstract
To compare intravitreal bevacizumab versus ranibizumab as adjuvant treatment prior to pars plana vitrectomy (PPV) in proliferative diabetic retinopathy (PDR) with respect to parameters of surgical complexity. Prospective, randomized, double-masked pilot study of patients requiring PPV for nonclearing vitreous hemorrhage or tractional retinal detachment (TRD) secondary to PDR. Patients were randomized to receive either intravitreal bevacizumab or ranibizumab at standard doses 1 week preoperatively. Measured parameters included total surgical time, presence of TRD, intraoperative bleeding, iatrogenic retinal breaks, and use of endolaser and endodiathermy or silicone oil. A total of 29 patients were recruited. For surgical parameters, there were no statistically significant differences between the groups in the univariate analyses. Multivariable analysis showed no statistically significant difference for total surgical time. This pilot study suggests that intravitreal bevacizumab and ranibizumab are equivalent as surgical adjuvants when used as pre-treatment in patients with PDR undergoing PPV.
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