Treatment of Diabetic Retinopathy Control of blood glucose and blood pressure (BP) For macular edema, intraocular injection of antivascular endothelial growth factor (anti-VEGF) drugs, intraocular corticosteroid implants, focal laser, and / or vitrectomy For high-risk or complicated proliferative retinopathy, anti-VEGF drugs, panretinal laser photocoagulation and sometimes vitrectomy Control of blood glucose and BP are critical; intensive control of blood glucose slows progression of retinopathy.