Fig. 4

Percentages of eyes within ± 0.25 D, ± 0.50 D, ± 0.75 D and ± 1.00 D of prediction errors using different formulas with total keratometry (TK) and standard keratometry (K). XGB, XGBoost enhancement calculator; RBF 3.0, Radial Basis Function formula 3.0; BUII, Barrett Universal II formula; K6, Cooke K6 formula; EVO 2.0, Emmetropia Verifying Optical formula version 2.0