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Introduction <p>This retrospective, single-center study of consecutive eyes evaluated early visual and refractive outcomes following keratorefractive lenticule extraction (KLEx) using VISUMAX&#xa0;800 femtosecond laser (Carl Zeiss Meditec) for myopia and myopic astigmatism in a large population.</p> Methods <p>Adult patients with a myopia up to − 10.00&#xa0;D and astigmatism up to 5.00&#xa0;D were treated in this study. Uncorrected distance visual acuity, manifest refraction, corrected distance visual acuity (CDVA), and high-order aberrations (HOA) were assessed at the 3-month postoperative visit.</p> Results <p>In total, 1611 eyes were included in this study. Mean preoperative manifest spherical equivalent (SEQ) was − 4.49 ± 1.87&#xa0;D. At the 3-month postoperative visit, UDVA was 20/20 or better in 99% of eyes, compared to 100% preoperatively. The achieved SEQ was within ± 0.50&#xa0;D of the intended correction in 98.7% of eyes, and within ± 1.00&#xa0;D in 99.8%. Residual refractive astigmatism was ≤ 0.50&#xa0;D in 97.3% of eyes. Mean postoperative total HOAs was 0.13 ± 0.12&#xa0;µm. No eyes lost two or more lines of CDVA.</p> Conclusion <p>Early outcomes following KLEx using the VISUMAX&#xa0;800 demonstrated excellent accuracy and predictability in the treatment of myopia and myopic astigmatism.</p>

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Three-Month Visual and Refractive Outcomes of Keratorefractive Lenticule Extraction (KLEx) for Myopia and Myopic Astigmatism Using the VISUMAX 800 in 1611 Eyes

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  • 发表日期：

    2026年3月26日

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  • Aadithreya Varman,
  • N. V. Arulmozhi Varman,
  • Karuna Adaikalam

摘要

Introduction

This retrospective, single-center study of consecutive eyes evaluated early visual and refractive outcomes following keratorefractive lenticule extraction (KLEx) using VISUMAX 800 femtosecond laser (Carl Zeiss Meditec) for myopia and myopic astigmatism in a large population.

Methods

Adult patients with a myopia up to − 10.00 D and astigmatism up to 5.00 D were treated in this study. Uncorrected distance visual acuity, manifest refraction, corrected distance visual acuity (CDVA), and high-order aberrations (HOA) were assessed at the 3-month postoperative visit.

Results

In total, 1611 eyes were included in this study. Mean preoperative manifest spherical equivalent (SEQ) was − 4.49 ± 1.87 D. At the 3-month postoperative visit, UDVA was 20/20 or better in 99% of eyes, compared to 100% preoperatively. The achieved SEQ was within ± 0.50 D of the intended correction in 98.7% of eyes, and within ± 1.00 D in 99.8%. Residual refractive astigmatism was ≤ 0.50 D in 97.3% of eyes. Mean postoperative total HOAs was 0.13 ± 0.12 µm. No eyes lost two or more lines of CDVA.

Conclusion

Early outcomes following KLEx using the VISUMAX 800 demonstrated excellent accuracy and predictability in the treatment of myopia and myopic astigmatism.