Accuracy of refractive outcomes using standard or total keratometry for intraocular lens power formulas in conventional cataract surgery.

ABSTRACT:

Purpose

To evaluate if total keratometry (TK) is better than standard keratometry (K) for predicting an accurate intraocular lens (IOL) refractive outcome in virgin eyes using four IOL power calculation formulas.

Methods

447 eyes that underwent monofocal intraocular lens implantation were enrolled in this study. IOLMaster 700 (Carl Zeiss Meditech, Jena, Germany) was used for optical biometry. Prediction error (PE), mean absolute prediction error (MAE), median absolute prediction error (MedAE), proportions of eyes within ± 0.25 diopters (D), ± 0.50 D, ± 0.75 D, ± 1.00 D, ± 2.00 D prediction error, and formula performance index (FPI) were calculated for each K- and TK-based formula.

Results

Overall, the accuracy of each TK and K formula was comparable. The MAEs and MedA

SUBMITTER: Zhao H 

PROVIDER: S-EPMC10405480 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature