Table 4 Comparison of preoperative and postoperative changes in corneal HOAs in femto-LASIK at 6-month postoperatively
Parameter | Mean ± Standard Deviation | P-value | |
|---|---|---|---|
Preoperative | Postoperative | ||
Front corneal HOAs | |||
Z3,3 | 0.006 ± 0.076 | −0.017 ± 0.149 | 0.644 |
Z3,1 | 0.007 ± 0.139 | −0.019 ± 0.471 | 0.845 |
Z3,-1 | −0.086 ± 0.251 | −0.393 ± 0.335 | 0.021 |
Z3,-3 | −0.056 ± 0.120 | 0.026 ± 0.176 | 0.206 |
Z4,4 | −0.024 ± 0.090 | −0.069 ± 0.073 | 0.233 |
Z4,2 | 0.013 ± 0.051 | −0.113 ± 0.113 | 0.001 |
Z4,0 | 0.271 ± 0.132 | 0.479 ± 0.139 | 0.001 |
Z4,-2 | −0.016 ± 0.047 | 0.005 ± 0.089 | 0.479 |
Z4,-4 | 0.007 ± 0.076 | 0.034 ± 0.126 | 0.496 |
Back corneal HOAs | |||
Z3,3 | 0.008 ± 0.048 | 0.009 ± 0.052 | 0.971 |
Z3,1 | −0.001 ± 0.025 | 0.004 ± 0.035 | 0.463 |
Z3,-1 | 0.013 ± 0.025 | 0.027 ± 0.027 | 0.015 |
Z3,-3 | −0.026 ± 0.042 | −0.055 ± 0.037 | 0.046 |
Z4,4 | −0.038 ± 0.035 | −0.041 ± 0.038 | 0.695 |
Z4,2 | −0.009 ± 0.014 | −0.008 ± 0.012 | 0.695 |
Z4,0 | −0.143 ± 0.017 | −0.140 ± 0.024 | 0.277 |
Z4,-2 | 0.003 ± 0.013 | −0.001 ± 0.016 | 0.339 |
Z4,-4 | 0.006 ± 0.030 | −0.008 ± 0.029 | 0.049 |
Total corneal HOAs | |||
Z3,3 | 0.042 ± 0.114 | −0.008 ± 0.157 | 0.339 |
Z3,1 | −0.001 ± 0.131 | −0.015 ± 0.450 | 0.878 |
Z3,-1 | −0.128 ± 0.215 | −0.368 ± 0.328 | 0.007 |
Z3,-3 | −0.031 ± 0.122 | −0.023 ± 0.173 | 0.883 |
Z4,4 | −0.096 ± 0.091 | −0.108 ± 0.064 | 0.659 |
Z4,2 | −0.007 ± 0.055 | −0.122 ± 0.055 | 0.004 |
Z4,0 | 0.168 ± 0.061 | −0.430 ± 0.137 | < 0.001 |
Z4,-2 | −0.016 ± 0.047 | 0.004 ± 0.098 | 0.538 |
Z4,-4 | 0.002 ± 0.089 | 0.033 ± 0.133 | 0.423 |