Thelansis

  Proliferative vitreoretinopathy (PVR) is the most common cause of failure of rhegmatogenous retinal detachment repair. It is characterized by the growth and contraction of cellular membranes within the vitreous cavity and on both sides of the retinal surface and intraretinal fibrosis. Contraction of these membranes can cause the retina to redetach and transform a rhegmatogenous detachment into a tractional detachment. It is most common as a clinical complication of surgical procedures to correct rhegmatogenous retinal detachments, which are detachments that follow the formation of a retinal tear or hole. Tractional forces produced by the scar tissue-like PVR membranes can be transmitted to the retina, resulting in complete retinal detachment, retinal degeneration, and permanent blindness. PVR has also been reported to be common following posterior segment procedures or disorders such as giant retinal tears, macular relocation surgery, tumors endoresection, and chip implantation...