Histology of fibrovascular membranes of proliferative diabetic retinopathy after intravitreal injection of bevacizumab.

Purpose:The purpose was to study the histology of the fibrovascular membranes in proliferative diabetic retinopathy (PDR) with an intravitreal injection of bevacizumab.Methods:Light and electron microscopic studies were performed on surgical specimens obtained during a pars plana vitrectomy from 6 P