How high is blood sugar before my eyes become blurred

Diabetic retinopathy is one of the most common complications of diabetes mellitus. It is the most common form of diabetic retinopathy, and it is the most common form of diabetic retinopathy. When showing diabetic retinopathy, it will generally show symptoms of blurred vision. How high blood sugar, eyes will show blurred, there is no standard clinical stage. For example, fasting blood sugar above 8mmol/L and postprandial blood sugar for a long time above 12mmol/L, long time without intervention, usually do not pay attention to diet, do not pay attention to physical exercise, the probability of blurred vision will be relatively high.