[Epidemiologic study of diabetic retinopathy in Capital Steel Company]

To investigate the prevalence and risk factors of diabetic retinopathy.

29,938 subjects aged 30 years or older were screened for diabetic retinopathy in Capital Steel Company.

Among the 955 subjects (3.19%) proved to have diabetes mellitus, 534 subjects underwent ophthalmoscopic and fluorescein angiographic examinations. Diabetic retinopathy was present in 90 of the 534 (16.9%).

Diabetic retinopathy is correlated with the duration of diabetes, type of diabetes treatment, and fasting glucose level. Other factors have no significant association with the retinopathy. By multiple logistic analysis, duration of diabetes and fasting glucose level are the most important risk factors related to the retinopathy.