Accuracy of Intraocular Lens Power Formulas Involving 148 Eyes with Long Axial Lengths: A Retrospective Chart-Review Study

Journal of Ophthalmology
Chong ChenXun Xu

Abstract

Purpose. This study aims to compare the accuracy of intraocular lens power calculation formulas in eyes with long axial lengths from Chinese patients subjected to cataract surgery. Methods. A total of 148 eyes with an axial length of >26 mm from 148 patients who underwent phacoemulsification with intraocular lens implantation were included. The Haigis, Hoffer Q, Holladay 1, and SRK/T formulas were used to calculate the refractive power of the intraocular lenses and the postoperative estimated power. Results. Overall, the Haigis formula achieved the lowest level of median absolute error 1.025 D (P < 0.01 for Haigis versus each of the other formulas), followed by SRK/T formula (1.040 D). All formulas were least accurate when eyes were with axial length of >33 mm, and median absolute errors were significantly higher for those eyes than eyes with axial length = 26.01-30.00 mm. Absolute error was correlated with axial length for the SRK/T (r = 0.212, P = 0.010) and Hoffer Q (r = 0.223, P = 0.007) formulas. For axial lengths > 33 mm, eyes exhibited a postoperative hyperopic refractive error. Conclusions. The Haigis and SRK/T formulas may be more suitable for calculating intraocular lens power for eyes with axial lengths ranging from ...Continue Reading

References

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May 1, 1990·Journal of Cataract and Refractive Surgery·D R SandersM G Raanan
Jan 1, 1988·Journal of Cataract and Refractive Surgery·J T HolladayR S Ruiz
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Jun 29, 2015·American Journal of Ophthalmology·Kenneth J HofferStanley Bentow

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Citations

Apr 30, 2020·Asia-Pacific Journal of Ophthalmology·Jocelyn Hui Lin GohYih-Chung Tham
Oct 2, 2020·The British Journal of Ophthalmology·Veronika RögglaRupert Menapace
Mar 25, 2018·Practical Neurology·Zhaleh KhaleeliGordon T Plant
Aug 17, 2020·Journal of Neuro-ophthalmology : the Official Journal of the North American Neuro-Ophthalmology Society·William A Fletcher, Richard K Imes
Mar 30, 2021·The International Journal of Biochemistry & Cell Biology·Sharmila RajendranKaviarasan Kuppan

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