A Preliminary Study On Visual Cognitive Function In Diabetic Patients With Normal Vision

Objective To explore whether the visual cognitive function of diabetic patients with normal vision is abnormal compared with normal controls,and its correlation with glycosylated hemoglobin and the course of disease.Methods In this study,79 diabetic patients(79 eyes)with normal vision were selected,including 41 patients without diabetic retinopathy(41 eyes),38 patients with diabetic retinopathy(38 eyes)and 44 normal controls(44 eyes).All subjects were tested for grating sharpness,second-order grating perception and second-order motion grating perception,and the three groups were compared with each other.At the same time,the correlation of grating sharpness,second-order grating perception,second-order motion grating perception with the course of diabetes and glycosylated hemoglobin was analyzed.Results There were significant differences in grating sharpness,second-order grating perception and second-order motion grating perception between the diseased group and the non-diseased group,and between the diseased group and the control group,but there was no significant difference between the non-diseased group and the control group.There was a negative correlation between the perception ability of second-order grating and the course of disease.Conclusion These results show that although the vision is normal,the visual cognitive function of diabetic patients has been impaired,suggesting that attention should be paid to visual cognitive abnormalities other than visual acuity in diabetic patients.