Abstract
Purpose:
To compare the predictive accuracy of the biometer-embedded Barrett True-K TK and new total corneal power methods of intraocular lens (IOL) power calculation in eyes with prior laser vision correction (LVC) for myopia.
Setting:
Academic clinical practice.
Design:
Retrospective case series.
Methods:
IOL power formulas were assessed using measurements from a swept-source optical coherence biometer. Refractive prediction errors were calculated for the Barrett True-K TK, EVO 2.0, Pearl-DGS, and HofferQST, which use both anterior and posterior corneal curvature measurements. These were compared with the Shammas, Haigis-L, Barrett True-K No History (NH), optical coherence tomography, and 4-formula average (AVG-4) on the ASCRS postrefractive calculator, and to the Holladay 1 and 2 with non linear axial length regressions (H1- and H2-NLR).
Results:
The study comprised 85 eyes from 85 patients. Only the Barrett True-K TK and EVO 2.0 had mean numerical errors that were not significantly different from 0. The EVO 2.0, Barrett True-K TK, Pearl-DGS, AVG-4, H2-NLR, and Barrett True-K NH were selected for further pairwise analysis. The Barrett True-K TK and EVO 2.0 demonstrated smaller root-mean-square absolute error compared with the Pearl-DGS, and the Barrett True-K TK also had a smaller mean absolute error than the Pearl-DGS.
Conclusions:
The Barrett True-K TK and EVO 2.0 formulas had comparable performance to existing formulas in eyes with prior myopic LVC.
Publisher
Ovid Technologies (Wolters Kluwer Health)
Subject
Sensory Systems,Ophthalmology,Surgery
Reference22 articles.
1. Intraocular lens power calculations in eyes with previous corneal refractive surgery;Wang;Ophthalmology,2021
2. Prospective, randomized, contralateral eye comparison of functional optical zone, and visual quality after SMILE and FS-LASIK for high myopia;He;Transl Vis Sci Technol,2022
3. Changes of functional optical zone after LASIK for hyperopia and hyperopic astigmatism;Roesler;J Refract Surg,2018
4. Functional optical zone of the cornea;Tabernero;Invest Opthalmol Vis Sci,2007
5. Analysis of the effectiveness of SMILE, FS-LASIK, and SBK in myopic patients and the impact in UCVA and tear film stability;Ji;Contrast Media Mol Imaging,2022
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