方法：收集就诊于眼科门诊的127例近视患者，采用近远距隐斜眼位得到计算法AC/A和近距附加+1.00D得到梯度法AC/A，比较计算法和梯度法AC/A在不同眼位中的差异。

结果：计算法AC/A值高于近距+1.00D梯度法AC/A值(P<0.01)； 对同一种方法在不同眼位组中比较发现，计算法AC/A和梯度法AC/A在不同眼位组中均有差异，内隐斜组AC/A最高，外隐斜组AC/A最低； 对同一眼位组中的两种方法比较发现，在内隐斜组和正视组中计算法AC/A高于梯度法(均P<0.01)，外隐斜组中两种方法测得AC/A值无差异(P>0.05)。

结论：计算法AC/A高于梯度法AC/A，特别是在内隐斜患者和正视患者中使用计算法易得到高AC/A值，造成错误诊断，更推荐使用梯度法。

METHODS: A total of 127 myopes in ophthalmology were included. The calculated AC/A was obtained by near/distance phoria and the gradient AC/A was obtained by near addition +1.00D. The differences of eye positions of the calculated and gradient AC/A were compared.

RESULTS:The calculated AC/A value was higher than the near +1.00D gradient AC/C(P<0.01); Comparing the same method in different eye positions revealed that the calculated AC/A and gradient AC/A were significantly different, which has the highest AC/A in the esophoria group and the lowest AC/A in the exophoria group; Comparing the two methods in the same group revealed that the calculated AC/A in the esophoria group and the normal group was higher than the gradient AC/A(P<0.01), and there was no significant difference in the AC/A measured by the two methods in the exophoria group(P>0.05).

CONCLUSION: The calculated AC/A is higher than the gradient AC/A, especially in patients with esophoria and emmetropia, it is easy to obtain high AC/A values by using the calculation method, resulting in erroneous diagnosis. The gradient method is more recommended.