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Refractive astigmatism preoperatively (red columns) and 1-year postoperatively (blue columns), in (A) the LASIK-CXL group and (B) the stand-alone LASIK group.
Notes: The graph shows percentage of eyes (vertical axis) versus refractive astigmatism (horizontal axis).
Abbreviations: CXL, cross-linking; LASIK, laser-assisted in situ keratomileusis.
