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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