Comparison of the accuracy of three intraocular lens power calculation formulas in cataract patients with prior radial keratotomy

European Journal of Medical Research

Research

Jing-Shang Zhang¹  Jin-Da Wang¹  Kai Cao¹  Ying-Yan Mao¹  Xiu-Hua Wan¹  Meng Li¹ 

[1] Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Laboratory, 1 Dongjiaominxiang Street, Dongcheng District, 100730, Beijing, China;

关键词: Radial keratotomy;    Cataract;    Intraocular lens power calculation formula;    Myopia;    Absolute error;   

DOI  :  10.1186/s40001-023-00998-8

 received in 2022-10-12, accepted in 2023-01-05,  发布年份 2023

来源: Springer

【 摘 要 】

PurposeTo compare the accuracy of three intraocular lens (IOL) formulas in Chinese cataract patients with prior radial keratotomy (RK).MethodsMedical records of cataract patients with prior RK at Beijing Tongren Hospital were retrospectively analysed. The absolute error (AE) was calculated as the absolute difference between the actual postoperative spherical equivalent and the predicted spherical equivalent. The AE and percentages of eyes with AE within 0.5D, 1.0D, and 2.0D for three formulas [Barrett True-K, Holladay 1 (D–K), Haigis] were calculated and compared.ResultsForty-seven eyes of 28 cataract patients were included. The Median AE (MedAE) was significantly different among the three formulas (P < 0.001). The MedAE was lowest for the Barrett True-K formula (0.62), followed by the Haigis (0.76), and Holladay 1 (D–K) (1.16). The percentages of eyes with AE within 0.5D, and 1.0D were significantly different among the 3 formulas (P = 0.009, and P < 0.001). The Barrett True-K formula achieved the highest percentages (46.8%) of eyes with AE within 0.5D. Haigis achieved the highest percentages (70.21%) of eyes with AE within 1.0 D.ConclusionsBarrett True-K is the most accurate IOL power calculation formula among the 3 formulas and Haigis is an alternative choice. Considering the relatively lower accuracy of IOL formulas in cataract patients with prior RK, newer and more accurate IOL formulas are desirable.

【 授权许可】

CC BY   
© The Author(s) 2023

【 图 表 】

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