Proteomic investigation after laser-induced retinal artery occlusion (RAO) relevant to clinical manifestation indicated an increased Bax protein (also known as Bcl-2-associated X protein, or bcl-2-like protein 4), and simultaneous elevation of cytosolic cytochrome c and caspase-9, which suggests severe oxidative stress accompanied by the mitochondrial dysfunction and pro-apoptotic events [13]. This evidence concerns the gene BAX and retinal artery occlusion.