VEGFA and retinal vein occlusion: An intravitreal injection of anti-vascular endothelial growth factor (anti-VEGF) agents has become a common procedure for several types of retinal diseases, e.g., exudative age-related macular degeneration (AMD), macular edema associated with retinal vein occlusion (RVO), diabetic retinopathy, and other retinal diseases associated with vascular abnormalities1, 2, 3, 4, 5, 6, 7, 8.