Descending doses of intravitreal bevacizumab for the regression of diabetic neovascularization
Purpose: To report short-term regression of neovascularization after varying intravitreal doses of bevacizumab (Avastin®; Genentech, San Francisco, California, USA) in patients with proliferative diabetic retinopathy (PDR).Methods: Eighty eyes from 76 patients with active neovascularization of the disc (NVD) or elsewhere (NVE) caused by PDR were divided into four groups and treated with a single intravitreal bevacizumab (IVB) injection of 1.25 mg, 600 [mu]g, 300 [mu]g or 150 [mu]g, respectively. All patients underwent ophthalmoscopic examination and fluorescein angiography at baseline, 1 week, 1 month and 2 months later.Results: No significant ocular or systemic adverse events were observed. In all patients with NVD or NVE, complete resolution of leakage was recorded within the first week or the first mon