Although the results showed a trend for more biomechanical metrics such as DA, DARatio 2 mm and SSI which were significantly different between FS-LASIK Xtra and its corresponding non-Xtra group compared with tPRK Xtra, no statistical difference in these metrics was observed between the two Xtra groups from pre to pos6m.
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Effect of corneal cross-linking on biomechanical changes following transepithelial photorefractive keratectomy and femtosecond laser-assisted LASIK.
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