Comparison of Femtosecond-Assisted Laser in Situ Keratomileusis and Wavefront-Guided Femtosecond- Assisted Laser in Situ Keratomileusis Procedures in Terms of High-Order Aberrations

Abstract

Introduction: To compare the results of femtosecond-assisted laser in situ keratomileusis (FS-LASIK) and wavefront-guided FS-LASIK (WFG FS-LASIK) procedures in terms of high-order aberrations (HOAs). Methods: One hundred and twenty-eight eyes of 64 patients with myopia and/or myopic astigmatism who had undergone FS-LASIK procedure comprised Group I. Their mean age was 27.87±5.49 (19–41) years. Thirty-two of them were male (50%) and 32 (50%) were female. One hundred and twenty-eight eyes of 64 patients with myopia and/or myopic astigmatism who had undergone WFG FS-LASIK procedure comprised Group II. Their mean age was 28.56±6.01 (19–42) years. Thirty-two of them were male (50%) and 32 (50%) were female. Two groups are compared with each other in terms of HOAs. Results: In respect to age and sex, there was no significant difference between FS-LASIK and WFG FS-LASIK groups (p>0.050). Regarding pre-operative and post-operative spherical, cylindrical, and spherical equivalent values, uncorrected distance vi- sual acuity, and corrected distance visual acuity, there was no significant difference between two groups (p>0.050). FS-LASIK induced more spherical aberration, coma, and trefoil than WFG FS-LASIK (p=0.000). Discussion and Conclusion: In conclusion, both FS-LASIK and WFG FS-LASIK are effective and safe procedures in the treat- ment of myopia and myopic astigmatism. FS-LASIK induces more spherical aberration, coma, and trefoil than WFG FS-LASIK procedure, meaning it causes more HOAs.