Clinical arrangement of classification of diabetic retinopathy.

Abstract

A new classification for diabetic retinopathy was presented and modified from Scott's classification which was most commonly used in Japan. Diabetic retinopathy was divided into benign and malignant retinopathy, and the former was named type A and the latter type B. Type A included background retinopathy and the interrupted stage of proliferative retinopathy. Background retinopathy was divided into two groups (AI, and AII). Interrupted proliferative retinopathy was also divided into three groups (AIII, IV, and V). Type B included preproliferative retinopathy, advanced proliferative retinopathy and the final stage of proliferative retinopathy. Preproliferative retinopathy was labeled Stage BI and advanced proliferative retinopathy was divided into two groups (BII and BIII). The final stage of proliferative diabetic retinopathy was divided into three stages (BIV, BV and VI). This new classification also presents the therapeutic method to be employed at each stage of diabetic retinopathy.