Accuracy of intraocular lens power calculation formulas in long eyes: a systematic review and meta-analysis

Clinical & Experimental Ophthalmology
Qiwei WangWeirong Chen

Abstract

Visual outcome after intraocular lens (IOL) implantation in long eyes is considerably affected by IOL power calculation. Various formulas have been designed to achieve an accurate IOL power prediction. However, controversy about the accuracy remains. To evaluate the accuracy of IOL power calculation formulas in long eyes. Meta-analysis. Patients with ocular axial length (AL) over 24.5 mm. A comprehensive search in PubMed, EMBASE, Cochrane Data Base of Systematic Reviews and the Cochrane Central Register of Controlled Trials were conducted by September, 2017. The weighted mean differences of mean absolute errors (MAE) and the odds ratio of percentage of eyes within ±0.50D of prediction error among formulas were analysed. Between-group differences of MAE among formulas. Eleven observational studies, involving 4047 eyes, were enrolled. Six formulas for IOL power calculation were compared: Barrett Universal II, Haigis, Holladay 2, SRK/T, Hoffer Q and Holladay 1. The MAE of Barrett Universal II was statistically lower than that of Holladay 2 (mean difference, MD = -0.04D, P = 0.0002), SRK/T (MD = -0.05D, P < 0.00001), Hoffer Q (MD = -0.07D, P < 0.00001) and Holladay 1 (MD = -0.07D, P < 0.00001). Barrett Universal II yielded signific...Continue Reading

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Citations

Aug 21, 2020·Journal of Cataract and Refractive Surgery·Eszter SzalaiAdrienne Csutak
Apr 30, 2020·Eye·David Carmona González, Carlos Palomino Bautista
Oct 2, 2020·The British Journal of Ophthalmology·Veronika RögglaRupert Menapace
Dec 1, 2020·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Zhi-Min ShuJin-Song Zhao
Sep 21, 2020·American Journal of Ophthalmology·Huanhuan ChengMingxing Wu
May 1, 2021·Eye·Shruti ChandraMayank A Nanavaty
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