when p < 0.05. Results Twenty eyes (14 patients) with CNV secondary to AMD were included. The mean patient age was 55.9 ± 13.9 years. Before injection, the mean best corrected visual acuity (BCVA) was 0.66 ± 0.29 (logMAR ± SD). The mean BCVA improved to 0.52 ± 0.32 (logMAR ± SD) after treatment (p = JY Park, et al. MfERG after Intravitreal Bevacizumab Injection 0.03) (Fig. 2A). The mean CMT measured by OCT at base- line was 319.43 ± 128.09 μm. At one month post injection, the mean CMT measurement had decreased to 268.29 ± 72.09 μm (Fig. 2B). Statistically significant difference was found between the CMT at baseline and after treatment (p = 0.04). TMV was 11.65 ± 2.45 mm3 before treatment and decreased to 10.52 ± 1.78 mm3 after treatment. There was significant improvement in TMV after injection (p = 0.01) (Fig. 2C). In mfERG, the amplitude of N1 in rings 1 to 3 changed after A Changes of N1 amplitude after injection A Changes of N1 implicit time after injection B Changes of P1 amplitude after injection B Changes of P1 implicit time after injection Fig. 3. Changes of N1 (A) and P1 (B) amplitude in multifocal elec- troretinogram before and after intravitreal injection (Wilcoxon's signed rank test, p < 0.05). Fig. 4. Changes of N1 (A) and P1 (B) implicit time in multifocal electroretinogram before and after intravitreal injection (Wilcoxon's signed rank test, p < 0.05). Table 1. Correlation with parameters of multifocal electroretinography and best corrected visual acuity (BCVA) BCVA (correlation coefficient)* BCVA (p-value) *Spearman’s Rho, p < 0.05. CMT (correlation coefficient)* CMT (p-value) *Spearman’s Rho, p < 0.05. Table 2. Correlation between parameters of multifocal electroretinography responses and central macular thickness (CMT) Ring 1 0.08 0.81 P1 amplitude Ring 2 - 0.12 0.71 Ring 3 0.26 0.43 Ring 1 implicit time N1 P1 0.7 0.35 0.01 0.26 Ring 2 implicit time N1 P1 - 0.03 0.03 0.94 0.94 Ring 3 implicit time N1 P1 - 0.12 - 0.20 - 0.71 - 0.54 Ring 1 0.03 0.93 P1 amplitude Ring 2 0.32 0.32 Ring 3 0.19 0.56 Ring 1 implicit time N1 P1 - 0.04 - 0.3 0.91 0.93 Ring 2 implicit time N1 P1 - 0.16 - 0.34 0.63 0.29 Ring 3 implicit time N1 P1 0.39 0.28 0.21 0.37 163