VEGFA and retinal vein occlusion: <h4>Purposes</h4>To investigate the efficacy and safety of subretinal balanced salt solution (BSS) injections for macular edema secondary to retinal vein occlusion (RVO-ME).<h4>Methods</h4>We retrospectively analyzed 19 eyes of 19 patients characterized by Retinal vein occlusion (RVO) diagnosed using retinal angiography and persistent or recurrent edema on optical coherence tomography after at least three standard-dose anti-vascular endothelial growth factor (VEGF) treatments.