Proliferative diabetic retinopathy

Is diabetes a major problem in the world, and as it seems, the incidence is increasing not only among adults but also among children, which cause a range of complications long-term, and these complications diabetic retinopathy proliferative or advanced, and that is characterized by an attempt body to form blood vessels new vasoproliferative response instead of blood damaged retina, and these vessels are fragile and easy to break, causing bleeding retina or gels found space glass, which leads to weakness Balabesar and dim vision, also associated with these vascular deposition of fibrous tissue and the scar, which may cause shrinking, the separation of network and the loss of of sight when not in treatment.

Pathophysiology

Was developed many theories to explain the mechanisms of disease, but the specific cause for the occurrence of the disease is still unclear.
Include theories of the influence of hormones, particularly growth hormone, and changes in blood clogging the capillaries and the lack of irrigation network, and the impact of increased blood sugar in the weakening of the wall of the capillaries of the retina, causing a Tmdeddat vascular minutes microaneurysms, and rupture of these aneurysms, which can cause patches of hemorrhagic classes of surface and deep retinal , and increase the diversion of these filaments, which leads to Ndhat exudates, and increased thickness of the retina, and at that spot coverage of the retina may occur lack of central vision.......