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Table 4 Group 3 (combined phacovitrectomy—group 2—eyes using group 1 optimised constants) overall outcomes of each formula

From: Intraocular lens power calculation formulas accuracy in combined phacovitrectomy: an 8-formulas comparison study

Formula

ME

SD

MAE

MedAE

Percentage of eyes within

Rank

 ± 0.25D

 ± 0.50D

 ± 1.00D

Kane

− 0.140

0.472

0.374

0.315

46.6

68.1

95.7

2.8

Barrett UII

− 0.137

0.509

0.402

0.293

43.1

69.8

94.8

3.2

PEARL-DGS

− 0.169

0.489

0.396

0.293

44.8

69.8

93.1

3.3

EVO 2.0

− 0.151

0.491

0.393

0.277

47.4

69.0

94.8

3.7

Haigis

− 0.126

0.528

0.403

0.290

46.6

70.7

91.4

4.5

Hoffer Q

− 0.133

0.562

0.417

0.270

38.8

69.8

92.2

5.0

Holladay 1

− 0.132

0.532

0.403

0.280

46.6

68.1

92.2

5.2

SRK/T

− 0.155

0.533

0.423

0.335

41.4

69.0

91.4

6.8

  1. ME mean prediction error, SD standard deviation, MAE mean absolute error, MedAE median absolute error