ABSTRACT
Background@#As a leading cause of blindness in working-aged people, diabetic retinopathy is a serious threat to quality of life. There is limited information on prevalence of Diabetic Retinopathy among diabetic subjects and its associated factors in a rural setting in developing countries including Mongolia.@*Methods@#Population based cross sectional study included either type 1 or 2 diabetic patients from Selenge province, Darkhan-Uul province, Tuv province and Dundgovi province, and done complete eye examination to detect any diabetic retinopathy including fundus examination. We classified diabetic retinopathy according to the severity and assessed risk factors.@*Results@#Totally 1443 persons participated in this study, the overall prevalence of any diabetic retinopathy was 16.3%, the overall prevalence of macular edema was 2.7%, and the overall prevalence of vision-threatening retinopathy was 2.2%. In persons with detected diabetic retinopathy, 85.8% has mild to moderate nonproliferative diabetic retinopathy. Selenge province has the most diabetic retinopathy (22.5%) compared to Darkhan-Uul, Tuv, and Dundgovi provinces (15.3%, p=0.01; 15.1%, p=0.03; 5.5%, p<0.001) respectively. Independent risk factor for any retinopathy were longer diabetes duration (p<0.001), high systolic blood pressure (p<0.001), high level of HbA1c (p<0.001), and smoking (p<0.001).@*Conclusions@#In this study overall prevalence of diabetic retinopathy was 16.3%, and our result is lower than other studies in Asia. Longer the duration of diabetes, and higher the systolic blood pressure, HbA1c are related to the development of diabetic retinopathy. We need better control of the hypertension and diabetes mellitus in the future.
ABSTRACT
We performed a epidemiologic study to find a prevalence and risk factors of diabetic retinopathy. We reviewed 130 diabetic patients who had been performed the fundus examination for the first time for retinopathy at the ophthalmic department of Chung Ang university hospital from March 1993 to December 1993. We studied epidemiologic work-up sheet and performed ophthalmic and laboratory examination. The patients' ages ranged from 25 to 81 years, with an average age of 58.9 years. The age, sex, intraocular pressure, fasting blood sugar, post cibos 2 hours (Pc2hrs), age of onset, residence, smoking, alcohol drinking, diet pattern, blood type, treatment method and menstruation status were not significantly correlated with prevalence of diabetic retinopathy statistically(p>0.05). But the duration of diabetes(p<0.01), glycosylated hemoglobin(HbA1C) and cataract operation(p<0.05) were significantly correlated with diabetic retinopathy statisically. The prevalence of diabetic retinopathy was 28.5%(background changes in 21.5%, preproliferative changes in 4.6% and proliferative change in 2.4%). The mean interval between diagnosis of diabetes and the first examination of retinopathy was 6.62 years.