Table 2.
Descriptive data (subjective refraction) and visual acuity 6 months postoperatively.
| Parameter | LASIK + MMC (N = 70) |
LASIK without MMC (N = 70) |
Total (N = 140) | p-value |
|---|---|---|---|---|
| Sphere (D) | W = 1788, p = 0.004, r=− 0.242a | |||
| Range | − 0.50, 1.00 | − 0.50, 1.50 | − 0.50, 1.50 | |
| Mean (SD) | 0.20 (0.31) | 0.38 (0.36) | 0.29 (0.35) | |
| Median (Q1,Q3) | 0.25 (0.00, 0.25) | 0.25 (0.25, 0.50) | 0.25 (0.00, 0.50) | |
| Cylinder (D) | W = 2875.5, p = 0.039, r=− 0.174a | |||
| Range | − 0.75, 0.00 | − 0.75, 0.00 | − 0.75, 0.00 | |
| Mean (SD) | − 0.10 (0.17) | − 0.15 (0.18) | − 0.12 (0.18) | |
| Median (Q1,Q3) | 0.00 (− 0.25, 0.00) | 0.00 (− 0.25, 0.00) | 0.00 (− 0.25, 0.00) | |
| Spherical Equivalent (D) | W = 1885.5, p = 0.017, r=− 0.202a | |||
| Range | − 0.62, 1.00 | − 0.50, 1.50 | − 0.62, 1.50 | |
| Mean (SD) | 0.15 (0.31) | 0.30 (0.37) | 0.23 (0.35) | |
| Median (Q1,Q3) | 0.25 (0.00, 0.25) | 0.25 (0.12, 0.50) | 0.25 (0.00, 0.38) | |
| CDVA | W = 2407, p = 0.838, r=− 0.017a | |||
| Range | − 0.10, 0.00 | − 0.10, 0.00 | − 0.10, 0.00 | |
| Mean (SD) | − 0.02 (0.03) | − 0.03 (0.04) | − 0.03 (0.04) | |
| Median (Q1,Q3) | 0.00 (− 0.04, 0.00) | 0.00 (− 0.10, 0.00) | 0.00 (− 0.04, − 0.00) | |
| UDVA | W = 2402.5, p = 0.730, r=− 0.029a | |||
| Range | 0.00, 0.05 | − 0.10, 0.10 | − 0.10, 0.10 | |
| Mean (SD) | 0.00 (0.01) | 0.00 (0.03) | 0.00 (0.02) | |
| Median (Q1,Q3) | 0.00 (0.00, 0.00) | 0.00 (0.00, 0.00) | 0.00 (0.00, 0.00) | |
CDVA: corrected distance visual acuity, UDVA: uncorrected distance visual acuity, LASIK: Laser-Assisted in Situ Keratomileusis, MMC: Mitomycin C, D: diopter, SD: standard deviation, Q1: first quartile, Q3: third quartile.
aMann-Whitney test.