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The difference in visual acuity (log MAR) before and after surgery.
| Data | Mean | SD | N | t | P valuea | 95% CI |
|---|---|---|---|---|---|---|
| Difference of UCVA | 0.66 | 0.52 | 15 | 4.932 | 0.0002 | 0.37–0.95 |
| Difference of BCVA | 0.67 | 0.57 | 15 | 4.581 | 0.0004 | 0.38–0.99 |
UCVA: uncorrected visual acuity, BCVA: best corrected visual acuity, SD: standard deviation, N: number of eyes, CI: confidence interval. aPaired t-test.
