摘要
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 UniversalⅡ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 UniversalⅡ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 UniversalⅡ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 UniversalⅡ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 UniversalⅡformulas.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 UniversalⅡformula,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 UniversalⅡ(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 UniversalⅡand Haigis formulas demonstrate high accuracy.
作者
王晓晨
苏文洁
葛佳佳
黄钰森
Wang Xiaochen;Su Wenjie;Ge Jiajia;Huang Yusen(Eye Institute of Shandong First Medical University,State Key Laboratory Cultivation Base,Shandong Provincial Key Laboratory of Ophthalmology,Qingdao 266071,China)
出处
《中华眼科杂志》
CAS
CSCD
北大核心
2024年第8期689-694,共6页
Chinese Journal of Ophthalmology
关键词
生物测量学
晶体
人工
预测
屈光外科手术
角膜外科手术
激光
Biometry
Lenses,intraocular
Forecasting
Refractive surgical procedures
Corneal surgery,laser
