{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T01:36:39Z","timestamp":1791423399736,"version":"4.3.3"},"reference-count":48,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2024,9,13]],"date-time":"2024-09-13T00:00:00Z","timestamp":1726185600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Med."],"abstract":"<jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>\n                      This study aims to compare the changes in the corneal wavefront aberrations and the objective visual quality resulting from two types of eye surgery\u2014small incision lenticule extraction (SMILE) and femtosecond laser-assisted\n                      <jats:italic>in situ<\/jats:italic>\n                      keratomileusis (FS-LASIK)\u2014in patients with moderate-to-high myopia.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>A prospective analysis was performed on 98 eyes of 51 patients who underwent SMILE. Additionally, 88 eyes of 45 patients who underwent FS-LASIK were analyzed. All patients underwent ocular examination preoperatively and at 1 day, 1 week, 1 month, and 3 months postoperatively. Corneal aberrations and objective visual quality were measured using the Optical Quality Analysis System II (OQAS II) and Optical Path Difference Scan III (OPD-Scan III).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      At postoperative 1 day and 1 week, there was a statistically significant difference in uncorrected distance visual acuity (UDVA) between SMILE and FS-LASIK (\n                      <jats:italic>P<\/jats:italic>\n                      &amp;lt; 0.05). Postoperative spherical (S), cylinder (C) and spherical equivalent refraction (SE) were similar between the two groups (\n                      <jats:italic>P<\/jats:italic>\n                      &amp;gt; 0.05). In both groups, the absolute magnitude of total higher-aberrations (tHOA), piston, vertical tilt, vertical coma, and spherical aberration (SA) increased after surgery compared to preoperative values (\n                      <jats:italic>P<\/jats:italic>\n                      &amp;lt; 0.05). There was no significant difference in \u0394horizontal tHOA, \u0394horizontal tilt, \u0394horizontal coma, and \u0394horizontal trefoil between the two groups (\n                      <jats:italic>P<\/jats:italic>\n                      &amp;gt; 0.05), and the FS-LASIK had higher \u0394vertical trefoil and \u0394SA (\n                      <jats:italic>P<\/jats:italic>\n                      &amp;lt; 0.05) but lower \u0394piston, \u0394vertical tilt, and \u0394vertical coma than the SMILE group (\n                      <jats:italic>P<\/jats:italic>\n                      &amp;lt; 0.05). There was a rise in objective scattering index (OSI) and a decline in both modulation transfer function (MTF) cutoff and Strehl ratio (SR) after surgery compared to preoperative values in both groups (\n                      <jats:italic>P<\/jats:italic>\n                      &amp;lt; 0.05). There was a statistically significant difference in the OSI at 1 day and 3 months between the two groups (\n                      <jats:italic>P<\/jats:italic>\n                      &amp;lt; 0.05). Postoperative MTF cutoff and SR were similar between the two groups (\n                      <jats:italic>P<\/jats:italic>\n                      &amp;gt; 0.05). Postoperative OSI was positively correlated with corneal tHOA (0.261 \u2264\n                      <jats:italic>R<\/jats:italic>\n                      \u2264 0.483,\n                      <jats:italic>P<\/jats:italic>\n                      &amp;lt; 0.05) and was negatively correlated with vertical tilt and vertical coma (\u22120.315 \u2264\n                      <jats:italic>R<\/jats:italic>\n                      \u2264 \u22120.209,\n                      <jats:italic>P<\/jats:italic>\n                      &amp;lt; 0.05) in both groups.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>While both SMILE and FS-LASIK can effectively correct moderate-to-high myopia, there is an increase in corneal aberrations and a postoperative delay in objective visual quality. The cornea may require a longer recovery period in the SMILE. OPD-Scan III combined with OQAS II is a useful supplementary inspection for assessing the optical quality following refractive surgery.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.3389\/fmed.2024.1408516","type":"journal-article","created":{"date-parts":[[2024,9,13]],"date-time":"2024-09-13T00:35:03Z","timestamp":1726187703000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":15,"title":["Comparison of objective visual quality between SMILE and FS-LASIK in moderate-to-high 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