AIM:To investigate the clinical efficacy of sub-Bowman’s keratomileusis(SBK)for treatment of myopia.METHODS:From December 2009 to June 2010,71 patients 142 eyes underwent the treatment of myopia by SBK.Their visual acuity,refraction,anterior and posterior corneal surface height changes before and 6 months after operation were reviewed.RESULTS:The uncorrected visual acuity(UCVA)of patients 6 months after operation were 0.8-1.5,average 1.14±0.17,UCVA of all patients were≥0.8,UCVA were≥1.0 in 136 eyes,accounting for 95.8%,UCVA were≥1.2 in 64 eyes,accounting for 45.1%;Except for 3 eyes of 2 cases with 1 line down,the best-corrected visual acuity(BCVA)of the others 6 months after operation were the same with or better than preoperative,all BCVA were≥0.8,BCVA were≥1.0 in 136 eyes(95.8%)BCVA≥1.2 in 70 eyes(49.3%),64 eyes(45.1%)with UCVA≥preoperative BCVA 6 months after operation.Diopter:spherical equivalent(SE)were(-0.65-+0.97)D,average(0.15±0.41)D.All SE were ≤±1.0D,92.8%≤±0.5D 6 months after operation.Anterior and posterior corneal surface height changes were roughly the same 6 months after operation.CONCLUSION:SBK treatment of myopia has good predictability,accuracy and safety.