Refractive, Topographic, and Aberrometric Results at 2-Year Follow-Up for Accelerated Corneal Cross-Link for Progressive Keratoconus
Table 2
Corneal wavefront aberrations before and 1, 6, 12, and 24 months after accelerated corneal cross-linking.
Characteristics (mean ± SD)
Preoperative
1 M
6 M
12 M
24 M
Total WFE
1.36 ± 0.59
1.38 ± 0.56
1.34 ± 0.56
1.37 ± 0.54
0.986
1.30 ± 0.56
0.116
Total HOA
0.54 ± 0.26
0.53 ± 0.25
0.51 ± 0.28
0.50 ± 0.25
0.50 ± 0.26
Astigmatism
1.23 ± 0.57
1.25 ± 0.55
1.21 ± 0.53
1.25 ± 0.56
0.582
1.18 ± 0.55
0.073
Trefoil
0.17 ± 0.10
0.17 ± 0.10
0.17 ± 0.10
0.16 ± 0.09
0.505
0.16 ± 0.11
0.459
Coma
0.45 ± 0.26
0.45 ± 0.25
0.43 ± 0.26
0.42 ± 0.25
0.42 ± 0.25
Quadrafoil
0.05 ± 0.03
0.06 ± 0.05
0.06 ± 0.03
0.06 ± 0.04
0.406
0.06 ± 0.04
0.237
Secondary astigmatism
0.08 ± 0.05
0.07 ± 0.04
0.07 ± 0.06
0.06 ± 0.05
0.062
0.07 ± 0.05
0.072
Spherical aberration
0.08 ± 0.06
0.08 ± 0.06
0.07 ± 0.06
0.07 ± 0.07
0.084
0.07 ± 0.06
0.060
SD: standard deviation, M: month, WFE: wavefront error, HOA: high order aberrations, , comparison of preoperative and 12th month values, , comparison of preoperative and 24th month values, and statistically significant increased values ().
