AIM:To investigate the influence of wearing glasses for teenagers myopia by determining the gradient AC/A radio,and to assess the role of the gradient AC/A radio made in myopia development and progression. METHODS:The study comprised 33 cases (66 eyes) of myopia. Refraction was measured with MPMVA, the gradient AC/A radio measured with risely prism on Phoropter. The main statistic soft ware SPSS 16.0 was used. RESULTS:After wearing glasses,the gradient AC/A ratios were higher than before, and went down after 3 months, there was statistic difference between them (P＜0.05). CONCLUSION:After teenagers of myopia wear suitable glasses,their accommodative and convergent parameters such as the gradient AC/A radio will be normalized gradually. Thus it is beneficial for recovering the function balance of accommodation and convergence.