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European Journal of Medical Research

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Open Access 01-12-2023 | Cataract | Research

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

Authors: Meng Li, Jin-Da Wang, Jing-Shang Zhang, Ying-Yan Mao, Kai Cao, Xiu-Hua Wan

Published in: European Journal of Medical Research | Issue 1/2023

Abstract

Purpose

To compare the accuracy of three intraocular lens (IOL) formulas in Chinese cataract patients with prior radial keratotomy (RK).

Methods

Medical 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.

Results

Forty-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.

Conclusions

Barrett 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.

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Title: Comparison of the accuracy of three intraocular lens power calculation formulas in cataract patients with prior radial keratotomy
Authors: Meng Li
Jin-Da Wang
Jing-Shang Zhang
Ying-Yan Mao
Kai Cao
Xiu-Hua Wan
Publication date: 01-12-2023
Publisher: BioMed Central
Keywords: Cataract
Keratotomy
Published in: European Journal of Medical Research / Issue 1/2023
Electronic ISSN: 2047-783X
DOI: https://doi.org/10.1186/s40001-023-00998-8

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

Abstract

Purpose

Methods

Results

Conclusions

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusions

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