As shown in Table 2, the levels of VEGF-A, VEGF-R1, and VEGF-R2 of the AMD group and RVO group were higher than that of the control group significantly (VEGF-A, p = 0.001 and p = 0.002; VEGF-R1, p = 0.003 and p = 0.031; VEGF-R2, p = 0.041 and p = 0.002, respectively). The gene discussed is KDR; the disease is age-related macular degeneration.