AIM: To compare the change of visual quality of femtosecond-laser in situ keratomileusis(FS-LASIK)and laser in situ keratomileusis(LASIK)for myopia.

METHODS: A retrospective case series. A total of 89 cases 178 eyes were chosen from Jan.2014 to Dec.2015. There were 46 cases(92 eyes)in FS-LASIK and 43 cases 86 eyes in LASIK. The visual acuity, refraction state, subjective visual quality score, high order aberration were measured at 6mo after surgery.

RESULTS: All patients underwent operation smoothly, and no complication was observed during and after surgery; there was no statistically significant difference between two groups at visual acuity(P>0.05). Postoperative diopter compared with preoperative expectations diopter difference is statistically significant between two groups(P<0.05). Subjective visual quality score was compared statistically significant postoperative 6mo in two groups(P<0.05). Six months after surgery in the two groups of patients with corneal aberration RMS values, spherical aberration and coma compared with preoperative increases, more than the expansion of the size of the FS-LASIK group low mechanical plate layer knife group, the difference was statistically significant(P<0.05).

CONCLUSION: Femtosecond laser corneal flap is more accurate and reliable and the discrete degree is smaller. It can make more thin corneal flap. Femtosecond laser disc of LASIK surgery compare with traditional mechanical plate layer knife following LASIK has better visual quality.