INS and diabetes mellitus: Take the prediction process of the risk of developing DR in a 60-year-old male diabetic patient whose personalized information was as follows: height 170 cm, weight 60 kg, no bariatric surgery, no myopia, no lipid-lowering drugs intake, fasting plasma glucose value was 6.5 mmol/L, 10 years of diabetes, HbA1c value was 7%, had intensive glycemic control, high blood pressure, insulin received, living in rural, have a history of smoking.