The search strategy was independently developed by one of the authors (G.F.): (ischemic occlusion of the central retinal veins OR CRVO) AND (laser OR panretinal photocoagulation OR PRP) AND (intravitreal anti-VEGF OR anti-VEGF OR corticosteroid therapy) AND (Macular edema OR neovascular glaucoma OR NVG OR ocular neovascularisation OR ocular NV OR iris neovascularisation OR NVI) AND (visual loss OR visual deterioration OR visual impairment). This evidence concerns the gene VEGFA and neovascular glaucoma.