REtinal Vein OccLUsion Treatment With Scatter Laser Guided by UWFA in combiNAtion With Ranibizumab Study

Branch retinal vein occlusion is a leading cause of vision loss. Treatment with ranibizumab (vascular endothelial growth factor (VEGF) inhibitor) on a monthly basis has been associated with improved vision results. There is a subgroup of patients with peripheral nonperfusion on ultrawidefield angiography that appears to be more dependent on anti-VEGF treatment. In this trial the investigators compare the gold standard of monthly ranibizumab injections with ranibizumab + peripheral scatter laser to the areas of nonperfusion on angiography. Each group will have monthly injections for the first six months, then as needed by either visual acuity decrease or increased retinal thickness for the subsequent six months. The primary outcome is visual acuity. Secondary outcomes are reduction in optical coherence tomography, and number of ranibizumab injections