(A) Fundus photograph of right and left eyes of 57-year-old man with NPDR who underwent uncomplicated ECCE with implantation of posterior chamber IOL, in right eye 5 months earlier. Retinopathy was symmetric before cataract surgery, but is asymmetric postoperatively. (B) Intravenous fluorescein angiography reveals asymmetry of NPDR, with significantly more microaneurysms and fluorescein leakage in right eye.