CXL-Plus group (n = 28) | CXL group (n = 28) | CXL-Plus group (n = 16) | CXL group (n = 10) | p1 (CXL-Plus group 12 vs. 24)* | p2 (CXL 12 vs. 24)* | p3 (CXL-Plus vs. CXL 24) | |
---|---|---|---|---|---|---|---|
12 months follow-up | 24 months follow-up | ||||||
Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | ||||
UDVA(logMAR) | 0.36 (0.29) | 0.46 (0.37) | 0.53 (0.51) | 0.29 (0.28) | 0.570 | 0.201 | 0.187 |
BSCVA(logMAR) | 0.10 (0.15) | 0.06 (0.11) | 0.10 (0.14) | 0.01 (0.07) | 0.072 | 0.879 | 0.072 |
Refractive values | |||||||
MRSE (D) | −0.54 (1.63) | − 0.05 (1.87) | −1.30 (3.15) | 0.66 (2.23) | 0.464 | 0.586 | 0.100 |
Manifest Sphere (D) | 0.41 (1.53) | 1.65 (1.90) | 0.02 (2.58) | 2.03 (2.20) | 0.733 | 0.548 | 0.053 |
Manifest Cylinder (D) | −1.91 (1.17) | −3.40 (2.11) | −2.63 (1.87) | − 2.73 (1.60) | 0.051 | 0.758 | 0.890 |
Curvature Values | |||||||
Cylinder (D) | 3.24 (1.98) | 4.03 (2.22) | 3.85 (2.49) | 4.56 (1.92) | 0.451 | 0.945 | 0.450 |
K1 (D) | 41.64 (2.67) | 43.20 (2.29) | 41.00 (3.09) | 42.77 (1.43) | 0.061 | 0.162 | 0.104 |
K2 (D) | 44.88 (3.63) | 47.23 (3.08) | 44.85 (4.81) | 47.33 (2.43) | 0.155 | 0.080 | 0.145 |
Kmax (D) | 48.57 (4.49) | 53.70 (4.52) | 49.69 (5.42) | 53.00 (4.94) | 0.796 | 0.023 | 0.131 |
Aberrometric Values | |||||||
Cornea Total | |||||||
RMS total (μm) | 1.62 (0.82) | 2.72 (1.35) | 2.22 (1.15) | 2.81 (1.52) | 0.124 | 0.860 | 0.272 |
RMS LOA (μm) | 1.57 (0.80) | 2.61 (1.31) | 2.15 (1.12) | 2.72 (1.46) | 0.123 | 0.911 | 0.272 |
RMS HOA (μm) | 0.40 (0.19) | 0.73 (0.36) | 0.53 (0.29) | 0.70 (0.43) | 0.191 | 0.228 | 0.239 |
RMS Coma-like (μm) | 0.31 (0.21) | 0.65 (0.36) | 0.46 (0.32) | 0.57 (0.47) | 0.147 | 0.087 | 0.508 |
Anterior corneal surface | |||||||
RMS total (μm) | 1.70 (0.93) | 2.98 (1.34) | 2.23 (1.15) | 2.96 (1.51) | 0.181 | 0.303 | 0.175 |
RMS LOA (μm) | 1.65 (0.92) | 2.88 (1.29) | 2.17 (1.12) | 2.86 (1.45) | 0.177 | 0.311 | 0.185 |
RMS HOA (μm) | 0.40 (0.21) | 0.79 (0.36) | 0.51 (0.27) | 0.74 (0.43) | 0.338 | 0.289 | 0.105 |
RMS Coma-like (μm) | 0.32 (0.22) | 0.72 (0.36) | 0.47 (0.29) | 0.66 (0.44) | 0.203 | 0.185 | 0.171 |
Posterior corneal surface | |||||||
RMS total (μm) | 0.83 (0.25) | 0.81 (0.29) | 0.91 (0.26) | 0.82 (0.29) | 0.608 | 0.871 | 0.419 |
RMS LOA (μm) | 0.79 (0.24) | 0.77 (0.28) | 0.87 (0.25) | 0.78 (0.28) | 0.523 | 0.918 | 0.403 |
RMS HOA (μm) | 0.24 (0.08) | 0.23 (0.09) | 0.26 (0.08) | 0.23 (0.09 | 0.343 | 0.894 | 0.384 |
RMS Coma-like (μm) | 0.23 (0.14) | 0.20 (0.08) | 0.22 (0.14) | 0.19 (0.10) | 0.453 | 0.885 | 0.579 |
Densitometric Values | |||||||
0.0–2.0 mm | 24.49 (5.43) | 25.70 (6.89) | 26.04 (8.89) | 26.88 (8.52) | 0.700 | 0.826 | 0.814 |
2.0–6.0 mm | 18.53 (2.40) | 18.69 (2.65) | 19.03 (4.08) | 18.71 (3.54) | 0.807 | 0.432 | 0.840 |