Purpose: To measure, using the retinal thickness analyzer, the mean foveal thickness and the mean perifoveal thickness values on patients suffering from mild non-proliferative diabetic retinopathy without clinically detectable macular edema (classified by the ETDRS study), and compare them with healthy individuals.
Methods: Observational analytical retrospective case-controlled study, on a sample of 79 eyes (39 affected and 40 control). The sample was selected from by exams previously taken at Centro Brasileiro de Cirurgia de Olhos (CBCO) (from 1999 to 2003) stored in the retinal thickness analyzer.