Table 2.
Parameter (mean ± SD) | Preoperatively | 6 M after CXL | 6 M after ICL | 12 M after ICL [a P value′] |
24 M after ICL [b P value′] |
---|---|---|---|---|---|
UDVA (logMAR) | 1.75 ± 0.56 | 1.84 ± 0.69 | 0.17 ± 0.07 | 0.17 ± 0.06 [0.317] |
0.17 ± 0.07 [0.317] |
CDVA (logMAR) | 0.17 ± 0.07 | 0.15 ± 0.05 | 0.12 ± 0.05 | 0.12 ± 0.05 [1.000] |
0.12 ± 0.05 [1.000] |
Sphere (D) | −9.60 ±4.69 | −9.55 ± 4.67 | −1.83 ± 0.93 | −1.75 ± 0.98 [0.317] |
−1.63 ± 0.95 [0.005] |
Cylinder (D) | 2.55 ± 1.35 | 2.38 ± 1.29 | 1.15 ± 0.64 | 1.00 ± 0.59 [0.034] |
1.05 ± 0.55 [0.102] |
SE (D) | −8.32 ± 4.33 | −8.36 ± 4.31 | −1.34 ± 0.86 | −1.17 ± 0.78 [0.027] |
−1.09 ± 0.75 [0.012] |
K (flat) (D) | 45.57 ± 4.13 | 45.59 ± 3.38 | 44.97 ± 3.74 | 44.99 ± 3.76 [0.610] |
44.93 ± 3.77 [0.131] |
K (steep) (D) | 49.17 ± 4.37 | 48.07 ± 4.42 | 47.31 ± 4.29 | 47.25 ± 4.35 [0.256] |
47.29 ± 4.37 [0.581] |
K (max) (D) | 51.16 ± 4.57 | 50.30 ± 4.55 | 49.82 ± 4.36 | 49.80 ± 4.34 [0.715] |
49.75 ± 4.35 [0.019] |
CXL: corneal collagen cross-linking; ICL: implantable collamer lens; SD: standard deviation; UDVA: uncorrected distance visual acuity; CDVA: corrected distance visual acuity; D: diopters; K: keratometry values.
′P value derived from Wilcoxon Signed Rank test.
aComparing 12 months after ICL to 6 months after ICL.
bComparing 24 months after ICL to 6 months after ICL.