Recovery from diabetic retinal blindness is highly unlikely as it causes irreversible damage to the retina. Diabetes mellitus is a metabolic disease that affects multiple organs and systems throughout the body, and the most serious consequence of the disease is that it causes complications in multiple systems throughout the body. It causes systemic microcirculatory disorders and capillary dysfunction, and one of the complications is retinopathy, which leads to retinal ischemia, neovascularization, and vitreous hemorrhage. Most of the diabetic retinopathy is irreversible, with the progress of the disease will eventually even blindness, the retinal function is completely lost, in principle, the possibility of recovery is minimal. Therefore, early screening for diabetic retinopathy is crucial, and once detected, retinopathy should be treated as soon as possible.