目的：比较不同角膜曲率和前房深度短眼轴白内障人群7种人工晶状体计算公式的屈光预测准确性，并分析预测误差的影响因素。

方法：回顾性分析了2020-11/2021-12在沈阳何氏眼科医院单纯行白内障超声乳化术的短眼轴患者125例125眼。按角膜曲率(Km)分为低平Km组(≤45.5 D)、中高Km组(45.5 D结果：总体比较时，各公式的预测误差存在显著差异(χ²=49.934，P<0.001)，Barrett Universal Ⅱ公式的MedAE最小(0.17 D)。分组比较时，中高及陡峭Km组各公式的预测误差存在显著差异(χ²=34.372、34.804，均P<0.001)，Barrett Universal Ⅱ公式的MedAE(0.14 D； 0.20 D)最小； ACD 3个分组的各公式预测误差均存在差异(χ²=22.863、25.568、13.647，均P<0.05)，Barrett Universal Ⅱ公式的MedAE(0.27 D； 0.15 D； 0.16 D)最小。多元线性回归分析显示Km、AL及IOL度数是导致术后预测误差的重要相关因素。

结论：短眼轴人群在不同生物测量参数下Barrett Universal Ⅱ公式较其他公式准确性更高，AL、Km及IOL度数与预测准确性密切相关。

METHODS: A retrospective analysis was performed for 125 patients(125 eyes)with a short AL, who received cataract phacoemulsification at Shenyang He Eye Specialist Hospital from November 2020 to December 2021. According to the keratometry(Km), they were divided into low flat Km group(≤45.5 D), medium and high Km group(45.5 DRESULTS: There was a significant difference in the absolute prediction error of each formula(χ²=49.934, P<0.001)in the overall comparative analysis, and the MedAE of the Barrett Universal Ⅱ formula was the smallest(0.17 D). There were significant statistical differences in the middle-high and steep Km groups(χ²=34.372, 34.804, all P<0.001), and the MedAE(0.14 D; 0.20 D)of the Barrett Universal Ⅱ formula was the smallest. The absolute prediction error of the 3 ACD subgroups was statistically significant(χ²=22.863, 25.568, 13.647, all P<0.05), and the MedAE(0.27 D; 0.15 D; 0.16 D)of the Barrett Universal Ⅱ formula was the smallest. Multiple linear regression analysis showed that Km, AL, and the IOL degree were important correlated factor leading to postoperative prediction error.

CONCLUSION: The accuracy of the Barrett Universal Ⅱ formula was higher in the short AL population under different biometric parameters, and AL, Km and IOL degree are closely related to the prediction accuracy.