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Table 2 The absolute prediction errors of different formulas using total keratometry or standard keratometry in highly myopic eyes

From: Application of total keratometry in ten intraocular lens power calculation formulas in highly myopic eyes

IOL formula

SD of PE

TK method (n = 103)

P1 value for multiple comparisons

SD of PE

K method (n = 103)

P2 value for multiple comparisons

 

MAE ± Std

MedAE

MAE ± Std

MedAE

XGB

0.518

0.379 ± 0.351

0.324

–

0.572

0.409 ± 0.398

0.296

–

RBF 3.0

0.527

0.411 ± 0.341

0.340

–

0.536

0.419 ± 0.352

0.355

–

Kane

0.536

0.518 ± 0.365

0.435

P1 (vs. XGB) = 0.018*

0.539

0.527 ± 0.381

0.475

–

BUII

0.604

0.516 ± 0.401

0.435

P1 (vs. XGB) = 0.022*

0.630

0.536 ± 0.414

0.445

P2 (vs. XGB) = 0.021*

EVO 2.0

0.593

0.530 ± 0.400

0.440

P1 (vs. XGB) < 0.001*

P1 (vs. RBF) = 0.002*

0.591

0.532 ± 0.412

0.425

P2 (vs. XGB) = 0.002*

P2 (vs. RBF) = 0.005*

K6

0.737

0.579 ± 0.489

0.435

P1 (vs. XGB) = 0.017*

0.731

0.572 ± 0.487

0.415

–

HaigisWK

0.692

0.569 ± 0.465

0.460

P1 (vs. XGB) < 0.001*

P1 (vs. RBF) = 0.003*

0.686

0.563 ± 0.471

0.465

P2 (vs. XGB) < 0.001*

P2 (vs. RBF) = 0.002*

Haigis

0.712

0.589 ± 0.488

0.450

P1(vs. XGB) = 0.004*

P1 (vs. RBF) = 0.020*

0.715

0.584 ± 0.483

0.475

P2(vs. XGB) = 0.016*

P2(vs. RBF) = 0.040*

SRK/TWK

0.621

0.535 ± 0.401

0.495

P1 (vs. XGB) = 0.004*

P1 (vs. RBF) = 0.017*

0.629

0.544 ± 0.409

0.465

P2(vs. XGB) = 0.003*

P2(vs. RBF) = 0.009*

SRK/T

0.733

0.565 ± 0.470

0.460

P1 (vs. XGB) = 0.067*

0.720

0.550 ± 0.466

0.445

–

  1. TK = total keratometry; K = standard keratometry; SD = standard deviation; PE = prediction error; MAE = mean absolute error; Std = standard deviation; MedAE = median absolute error; XGB = XGBoost enhancement calculator; RBF 3.0 = Radial Basis Function formula version 3.0; BUII = Barrett Universal II formula; EVO 2.0 = Emmetropia Verifying Optical formula version 2.0; K6 = Cooke K6 formula
  2. P1: P value of the Bonferroni correction for multiple comparisons with all TK method
  3. P2: P value of the Bonferroni correction for multiple comparisons with all K method
  4. *Statistically different (P < 0.05)