Results: the majority of patients with both eyes accounted for 89.4%; the rate of diabetes protection is 93.5%; The average thickness of the middle macula is 343.5 ± 16.2 μm; accompanying lesions (cataract, flaccid, strabismus, dry eyes, neural arteriosus, blepharitis); the thickness of the middle macula and the edema position are correlated with visual acuity and these correlations are statistically significant (p <0.05); but there is no correlation with time to detect disease and disease stage.