Ultrastructural changes in the vitreous body in diabetic retinopathy

The authors investigated by transmission electron microscopy bioptic specimens obtained during pars plana vitrectomy. In the findings phagocytozing cells predominate. Due to cell damage accurate typing is difficult. The authors discuss the causes and extent of cellular damage. From morphological findings the conclusion can be drawn that in the histological picture macrophages, hyalocytes and damaged collagen fibrils predominate.