Figure 5. FSTL1 expressed higher in vitreous humor in the anti-VEGF-treated PDR patients. The level of FSTL1 expression in vitreous humor was significantly higher in the anti-VEGF-treated PDR patients than in the untreated PDR patients. Data are expressed as mean ± SEM. * means P < 0.05, **means P < 0.01, *** means P < 0.001.