Abstract: Femtosecond laser assisted laser in situkeratomileusis (FS-LASIK) and small incision lenticule extraction (SMILE) are becoming more spread and accepted. Abundant clinical data showed these two kinds of surgeries show satisfactory results. The short-term postoperative uncorrected and best corrected distance visual acuity show good results. In various studies, the safety and efficacy index and the predictability show slight differences in FS-LASIK and SMILE procedures. In terms of objective visual quality, SMILE induces less aberrations and presents better modulation transfer function and scattering index than FS-LASIK. More research about long-term postoperative stability and optical quality are required for clinical work. (Int Rev Ophthalmol, 2022, 46: 497-501)

Key words: femtosecond laser assisted laser in situkeratomileusis, small incision lenticule extraction, stability, visual quality