[Pars plana vitrectomy in diabetic retinopathy. From pathogenetic principle to surgical strategy]

Diabetic retinopathy is the most important manifestation of diabetic eye disease. There are retinopathy, maculopathy, pathology of the vitreoretinal interface, and tractional retinal detachment. The development of surgical approaches based on pathogenetic ideas are shown. The beneficial effect of pars plana vitrectomy for persisting and recurrent vitreous hemorrhage, epiretinal fibrovascular proliferation, and retinal detachment is discussed. The surgical skills and experiences in diabetic eyes are stressed.