Table 2.
Visual acuity (log MAR) and its change (crude and proportion) before, 1, 3 and 6 month after operation
| Time | Mean ± SD | Median (Range) |
|---|---|---|
| Baseline | ||
| VA | 2.22 ± 0.35 | 2.1 (1.8 to 2.6) |
|
| ||
| Month 1 | ||
| VA | 1.38 ± 0.21 | 1.3 (1.1 to 1.8) |
|
| ||
| Change | -0.8 ± 0.2 | -0.8 (-1.2 to -0.5) |
|
| ||
| 95% CI | 0.74 - 0.95 | |
|
| ||
| Change % | -38 ± 6 | -38 (-48 to -26) |
|
| ||
| P-Within* | <0.001 | |
|
| ||
| Month 3 | ||
| VA | 0.91 ± 0.25 | 0.95 (0.4 to 1.2) |
|
| ||
| Change | -1.3 ± 0.3 | -1.4 (-2 to -0.9) |
|
| ||
| 95% CI | -1.44to -1.19 | |
|
| ||
| Change % | -59 ± 9 | -57 (-78 to -50) |
|
| ||
| P-Within* | <0.001 | |
|
| ||
| Month 6 | ||
| VA | 0.88 ± 0.23 | 0.95 (0.4 to 1.2) |
|
| ||
| Change | -1.3 ± 0.3 | -1.4 (-2 to -0.9) |
|
| ||
| 95% CI | -1.47 to-1.21 | |
|
| ||
| Change % | -60 ± 9 | -59 (-78 to -48) |
|
| ||
| P-Within* | <0.001 | |
*
Based on mixed model adjusted for the multiple comparisons by Bonferroni method
SD, standard deviation; CI, confidence interval; VA, visual acuity