Preoperative Postoperative Pvalue
BCVA
logMAR, mean ± SD 0.002 ± 0.077 -0.092 ± 0.078 0.001
decimal, mean (range) 1.00 (0.9-1.5) 1.24 (0.9-1.5)  
MV, mean ± SD 0.95 ± 0.69 0.67 ± 0.49 0.145
MH, mean ± SD 1.08 ± 0.71 0.76 ± 0.73 0.041
CFT (µm), mean ± SD
Total 337.0 ± 119.8 318.9 ± 94.1 0.248
ERM without PMH (n=11) 393.6 ± 81.2 342.3 ± 68.2 0.016
ERM with PMH (n=7) 248.0 ± 120.7 282.1 ± 121.4 0.398
BCVA: Best Corrected Visual Acuity; MV: Metamorphopsia score for a vertical line;
MH: Metamorphopsia score for a horizontal line; CFT: Central Foveal Thickness;
ERM: Epiretinal Membrane; PMH: Pseudo Macular Hole
Values in bold indicate statistical significance
Table 2: Preoperative and postoperative data (Wilcoxon signed-ranks test).