Thailand diabetes registry project: prevalence of diabetic retinopathy and associated factors in type 2 diabetes mellitus.

Objective: To determine the prevalence of and factors associated with Diabetic Retinopathy (DR) in type 2 diabetes in Thailand.

Material And Method: A cross-sectional, multicenter; hospital-based study was carried out between April and December 2003. Diabetic patients in diabetic clinics of 11 tertiary centers in Thailand were registered.