目的探讨屈光不正患者ＡＣ／Ａ比率均值及其特点。方法用ＴＳＪ－３型同视机测定屈光不正２７０例ＡＣ／Ａ比率。行扩瞳验光后，在复验时裸眼及戴矫正眼镜各测量一次；按平时是否戴镜分组，并同正常人ＡＣ／Ａ比率作对比。将两类屈光不正分别行不同年龄、性别和屈光程度组的统计分析。结果戴矫正眼镜ＡＣ／Ａ比率均值，近视眼为３４７±１９４△／Ｄ，远视眼为２０１±１４３△／Ｄ，二者和其分别同正常人间均有极显著的差异（Ｐ＜００１）。近视眼和远视眼的ＡＣ／Ａ比率大体上随年龄的增长和屈光度的增高而减少。近视眼ＡＣ／Ａ比率与性别无关（Ｐ＞００５），远视眼女性显著高于男性（Ｐ＜００５）。平时戴镜３个月以上者，ＡＣ／Ａ比率趋于正常。结论经矫正的屈光不正患者ＡＣ／Ａ比率均值，近视眼高于正常，远视眼低于正常。平时戴矫正眼镜能促使辐辏与调节恢复或接近平衡 Objective To investigate the average AC / A ratio and its characteristics in patients with refractive errors. Methods 270 patients with refractive error of AC / A ratio were measured with TSJ-3. After the line pupil optometry, the naked eye and wearing corrective glasses in the re-examination of each measurement; according to the usual whether to wear glasses group, and with normal AC / A ratio for comparison. Two types of refractive errors were analyzed in different age groups, gender and refractive group. Results Wearing corrective glasses AC / A ratio mean, myopia was 3  47 ± 1  94 △ / D, hyperopia was 2  01 ± 1  43 △ D, and the two were significantly different from the normal human Difference (P <001). The ratio of AC / A to myopia and hyperopia generally decreases with age and with increased diopter. Myopia AC / A ratio has nothing to do with gender (P> 0  05), women with hypermetropia was significantly higher than men (P <0  05). Usually wearing glasses for more than 3 months, AC / A ratio tends to be normal. Conclusion Corrected ametropia in patients with AC / A ratio of mean, myopia was higher than normal, hyperopia was lower than normal. Usually wear corrective glasses can induce convergence and adjustment of convergence or close to balance