There were no differences in high-order aberrations derived from the whole eye between bladeless and microkeratome treatments at any examination over 4-mm and 6-mm pupil diameters. The number of data (paired eyes) varied for each examination: 4-mm pupil, n=10 before LASIK, n=8 at 1 month, n=12 at 3 months, n=17 at 6 months, n=21 at 12 months, and n=20 at 36 months; 6-mm pupil, n=7 before LASIK, n=5 at 1 month and 3 months, n=10 at 6 months, n=12 at 12 months, and n=16 at 36 months.