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目的:比较全角膜曲率（TK）和标准角膜曲率（K）对角膜屈光术后白内障患者人工晶状体（IOL）度数测算结果的准确性。方法:回顾性病例系列研究。收集2022年9月至2023年12月就诊于山东第一医科大学附属青岛眼科医院，既往有激光角膜屈光手术病史且接受白内障摘除及IOL植入术的患者30例（36只眼），其中男性16例，女性14例，年龄为（53.6±8.1）岁。分别采用基于K的Haigis-L、Barrett True-K公式和基于TK的Haigis、Barrett Universal Ⅱ公式进行IOL度数计算，综合选择合适的IOL度数。白内障摘除术后进行客观验光获取术眼实际屈光度数，以实际等效球镜度数与预测屈光度数之间的差异为屈光预测误差（RPE），再取绝对值得到绝对误差（RAE），比较4个公式计算结果误差的差异。结果:36只眼TK与K具有良好的一致性，TK平均低于K 0.50 D。通过单因素方差分析比较4个公式的RPE，差异有统计学意义（ P<0.001）。其中基于TK的Haigis公式的RPE为（0.17±0.09）D，Barrett Universal Ⅱ公式的RPE为（0.21±0.11）D，均优于基于K的Haigis-L公式的（-0.61±0.12）D和Barrett True-K公式的（-0.57±0.11）D，差异有统计学意义（均 P<0.001）。基于TK的Haigis公式的术后RPE<±1.00 D者占92%（33只眼），Barrett Universal Ⅱ公式占86%（31只眼），基于K的Barrett True-K公式占75%（27只眼），而Haigis-L公式占67%（24只眼）。 结论:与K相比，TK可以提高角膜屈光术后人工晶状体计算的准确性；TK联合Barrett Universal Ⅱ公式及Haigis公式，均有较高的准确性。

Objective:To compare the accuracy of intraocular lens (IOL) power calculations using total keratometry (TK) versus standard keratometry (K) in post-corneal refractive surgery cataract patients.Methods:This retrospective case series study included 30 patients (36 eyes) with a history of laser corneal refractive surgery who underwent cataract extraction and IOL implantation at Qingdao Eye Hospital, Affiliated to Shandong First Medical University, from September 2022 to December 2023. The cohort comprised 16 males and 14 females, with an average age of (53.6±8.1) years. IOL power was calculated using the K-based Haigis-L and Barrett True-K formulas, as well as the TK-based Haigis and Barrett Universal Ⅱ formulas. Postoperative objective refraction was performed to obtain the actual refractive status of the operated eyes. The refractive prediction error (RPE) was defined as the difference between the actual spherical equivalent and the predicted refraction. The absolute value of the RPE was taken as the refractive absolute error (RAE). Differences in errors calculated by the four formulas were compared.Results:TK showed good consistency with K, with TK being on average 0.50 D lower than K. Analysis of variance revealed statistically significant differences in RPE among the four formulas ( P<0.001). The RPE for the TK-based Haigis formula was (0.17±0.09) D, and for the Barrett Universal Ⅱ formula, it was (0.21±0.11) D, both significantly better than the K-based Haigis-L formula (-0.61±0.12) D and Barrett True-K formula (-0.57±0.11) D (all P<0.001). The percentage of eyes with postoperative RPE<±1.00 D was higher for the TK-based Haigis (92%, 33 eyes) and Barrett Universal Ⅱ (86%, 31 eyes) formulas compared to the TK-based Barrett True-K (75%, 27 eyes) and Haigis-L formulas (67%, 24 eyes), with statistically significant differences ( P<0.05). Conclusions:Compared with K, TK improves the accuracy of IOL power calculation in post-corneal refractive surgery patients. Both the TK-based Barrett Universal Ⅱ and Haigis formulas demonstrate high accuracy.