PGF and age-related macular degeneration: In the AMD group, there was a significant correlation between the levels of sVEGFR-1 and sVEGFR-2, as well as between VEGF and PlGF levels (Table 2), but there were no correlations between sVEGFR-1 and VEGF or PlGF (Table 2) or between sVEGFR-2 and VEGF or PlGF (Table 2).