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- W3165118344 abstract "Abstract Background Intraocular lens (IOL) calculation using traditional formulas for post-corneal refractive surgery eyes can yield inaccurate results. This study aimed to compare the clinical accuracy of the newly developed Zhang & Zheng (ZZ) formula with previously reported IOL formulas. Study design Retrospective study. Methods Post-corneal refractive surgery eyes were assessed for IOL power using the ZZ, Haigis-L, Shammas, Barrett True-K (no history), and ray tracing (C.S.O Sirius) IOL formulas, and their accuracy was compared. No pre-refractive surgery information was used in the calculations. Results This study included 38 eyes in 26 patients. ZZ IOL yielded a lower arithmetic IOL prediction error (PE) compared with ray tracing ( P = 0.04), whereas the other formulas had values like that of ZZ IOL ( P > 0.05). The arithmetic IOL PE for the ZZ IOL formula was not significantly different from zero ( P = 0.96). ZZ IOL yielded a lower absolute IOL PE compared with Shammas ( P < 0.01), Haigis-L ( P = 0.02), Barrett true K ( P = 0.03), and ray tracing ( P < 0.01). The variance of the mean arithmetic IOL PE for ZZ IOL was significantly smaller than those of Shammas ( P < 0.01), Haigis-L ( P = 0.03), Barrett True K ( P = 0.02), and ray tracing ( P < 0.01). The percentages of eyes within ± 0.5 D of the target refraction with the ZZ IOL, Shammas, Haigis-L, Barrett True-K, and ray-tracing formulas were 86.8 %, 45.5 %, 66.7 %, 73.7 %, and 50.0 %, respectively ( P < 0.05 for Shammas and ray tracing vs. ZZ IOL). Conclusions The ZZ IOL formula might offer superior outcomes for IOL power calculation for post-corneal refractive surgery eyes without prior refractive data." @default.
- W3165118344 created "2021-06-07" @default.
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- W3165118344 date "2021-05-25" @default.
- W3165118344 modified "2023-10-12" @default.
- W3165118344 title "Comparative clinical accuracy analysis of the newly developed ZZ IOL and four existing IOL formulas for post-corneal refractive surgery eyes" @default.
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- W3165118344 doi "https://doi.org/10.1186/s12886-021-01991-7" @default.
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