Various parameters of diabetic retinopathy among clinic populations.

A study of 402 patients was undertaken in a diabetic clinic at a county hospital. Diabetes was more common in females. Diabetic retinopathy varied directly with the duration of diabetes. Retinopathy occurred earlier with late onset diabetes as compared with diabetes occurring in younger patients. The incidence of raised intraocular pressure was 13.1%. Raised intraocular pressure did not seem to protect the eye against diabetic retinopathy. Good control of diabetes did not seem to affect the nature of established retinopathy. The incidence of retinopathy was higher if hypertension was present.