VEGFA and choroidal neovascularization: The green clustering focused on the mechanism of action of ranibizumab in the treatment of nAMD, and the keywords “vascular endothelial growth factor (VEGF),” “choroidal neovascularization (CNV),” and “anti-VEGF” indicated that this clustering mainly investigated the mechanism by which ranibizumab reduced VEGF levels and inhibited CNV growth.