Visual function and morphology before and 6 months after vitrectomy
| Baseline | 6 months after vitrectomy | P value† | |
| BCVA LogMAR (Snellen) | 0.20±0.24 (20/32) | 0.01±0.13 (20/20) | <0.001* |
| ETDRS letter score | 74.81±73.15 | 94.86±76.39 | <0.001* |
| M-CHARTS vertical | 0.77±0.58 | 0.47±0.56 | 0.008† |
| M-CHARTS horizontal | 0.83±0.64 | 0.48±0.56 | 0.001* |
| FAZ of ERM (mm2) | 0.06±0.07 | 0.09±0.07 | <0.001* |
| FAZ area ratio | 0.23±0.23 | 0.39±0.28 | <0.001* |
Data are presented as mean±SD or ratios of numbers.
*Statistical significance, p<0.05.
†P values were calculated using the Wilcoxon signed-rank test.
BCVA, best-corrected visual acuity; ERM, epiretinal membrane; ETDRS, Early Treatment Diabetic Retinopathy Study; FAZ, foveal avascular zone; LogMAR, the logarithm of the minimum angle of resolution; M-CHARTS, metamorphopsia test.