CXCL12 and Polypoidal choroidal vasculopathy: Zhou et al. (36) investigated several angiogenic and inflammatory cytokines from neovascular AMD patients, polypoidal choroidal vasculopathy patients and cataract patients, and stated that VEGF-A and SDF1-α were significantly higher in eyes with neovascular AMD andpolypoidal choroidal vasculopathy patients than controls.