机译：·AIM: To compare visual performance of wavefront- guided laser keratomileusis (LASIK) with iris - registration (Wg -LASIK group) and conventional LASIK (LASIK group) one year after surgery and analyze the correlation between wavefront aberrations and visual performance. ·METHODS: Eight hundred and fifty-two myopic eyes of 430 patients were enrolled in this prospective study and divided into two groups: Wg -LASIK group (436 eyes) and LASIK group (416 eyes). A Wavescan Wavefront aberrometer was used to analyze Zernike coefficients and the root -mean -square (RMS) of higher order aberrations, and Optec 6500 visual function instrument was used to measure contrast sensitivity (CS) before and 3, 6, 12 months after surgery. ·RESULTS: The mean spherical equivalent (SE) in Wg- LASIK group was significantly better than those in LASIK group one year after surgery ( =0.024). Wg-LASIK eyes showed better CS values than LASIK eyes at all spatial frequencies with and without glare after surgery ( all < 0.01). Moreover, the increase of higher RMS (RMSh), coma, RMS3, RMS4, RMS5 in Wg -LASIK group were significantly lower than those in LASIK group 1 year after surgery ( all <0.05). The increase of coma, spherical aberration (SA), RMS3 and RMS4 in Wg-LASIK and coma and RMS3 in LASIK group were negatively correlated with reduction of contrast sensitivity 1 year after surgery. ·CONCLUSION: A significant better visual performance is got in Wg-LASIK group compared with LASIK group 1 year after surgery, and the Wg -LASIK is particularly suitable for eyes with high-magnitude RMSh.
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