AUTHOR=Zhang Yu , Sun Xiaoxiao , Chen Yueguo 

TITLE=Comparison of Corneal Optical Quality After SMILE, Wavefront-Optimized LASIK and Topography-Guided LASIK for Myopia and Myopic Astigmatism

JOURNAL=Frontiers in Medicine

VOLUME=9

YEAR=2022

URL=https://www.frontiersin.org/journals/medicine/articles/10.3389/fmed.2022.870330

DOI=10.3389/fmed.2022.870330

ISSN=2296-858X

ABSTRACT=<sec><title>Purpose</title><p>To compare visual outcomes and corneal optical quality after small incision lenticule extraction (SMILE), wavefront-optimized (WFO) FS-LASIK, and topography-guided customized ablation treatment (TCAT) FS-LASIK for myopia.</p></sec><sec><title>Methods</title><p>This prospective case-series study included 283 eyes of 283 myopic patients who underwent SMILE or FS-LASIK. There were 102, 100, and 81 eyes in the SMILE group, WFO group and TCAT group, respectively. The tomography system (Sirius) was used to measure corneal aberrations and optical quality.</p></sec><sec><title>Results</title><p>At postoperative 1 and 6 months, there were no significant differences in uncorrected distance visual acuity and corrected distance visual acuity among the three groups (<italic>P</italic> &gt; 0.05). Postoperative manifest refractive spherical equivalent was similar among the groups (<italic>P</italic> &gt; 0.05). There was statistically significant difference in cylinder at 1 month among the three groups, with the highest mean value in TCAT group (<italic>P</italic> &lt; 0.05). The corneal optical path difference, root mean square of corneal astigmatism and strehl ratio were the most superior in the TCAT group at postoperative 1 and 6 months (<italic>P</italic> &lt; 0.05).</p></sec><sec><title>Conclusion</title><p>SMILE, WFO FS-LASIK, and TCAT FS-LASIK provided similar visual results. The corneal visual quality after TCAT FS-LASIK was the best.</p></sec>