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. 2022 Apr 5:9:870330.
doi: 10.3389/fmed.2022.870330. eCollection 2022.

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

Yu Zhang  1   2 , Xiaoxiao Sun  1 , Yueguo Chen  1   2
Affiliations

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

Yu Zhang et al. Front Med (Lausanne). .

Abstract

Purpose: 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.

Methods: 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.

Results: 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 (P > 0.05). Postoperative manifest refractive spherical equivalent was similar among the groups (P > 0.05). There was statistically significant difference in cylinder at 1 month among the three groups, with the highest mean value in TCAT group (P < 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 (P < 0.05).

Conclusion: SMILE, WFO FS-LASIK, and TCAT FS-LASIK provided similar visual results. The corneal visual quality after TCAT FS-LASIK was the best.

Keywords: FS-LASIK; SMILE; optical path difference; optical quality; strehl ratio; topography-guided; wavefront-optimized.

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Conflict of interest statement

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Figures

FIGURE 1
FIGURE 1
Postoperative 6-month uncorrected distance visual acuity vs. preoperative corrected distance visual acuity. (A) SMILE group, (B) wavefront optimized group, (C) topography-guided custom ablation treatment group.
FIGURE 2
FIGURE 2
Change in Snellen lines of corrected distance visual acuity at postoperative 6-month. (A) SMILE group, (B) wavefront optimized group, (C) topography-guided custom ablation treatment group.
FIGURE 3
FIGURE 3
Spherical equivalent refractive accuracy at postoperative 6-month. (A) SMILE group, (B) wavefront optimized group, (C) topography-guided custom ablation treatment group.
FIGURE 4
FIGURE 4
Refractive astigmatism accuracy at postoperative 6-month. (A) SMILE group, (B) wavefront optimized group, (C) topography-guided custom ablation treatment group.
See this image and copyright information in PMC

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