Table 2.

Overview of prediction error outcomes in different IOL calculation formulas

Formula	MPE ± SD	MAE ± SD	MedAE
SRK/T	0.22 ± 0.66	0.56 ± 0.42	0.25
Barrett Universal II	0.60 ± 0.71*	0.72 ± 0.58	0.47
Barrett True-K predicted	0.14 ± 0.58	0.43 ± 0.42	0.14
Barrett True-K measured	0.09 ± 0.58	0.44 ± 0.38	0.10
Kane	0.60 ± 0.77*	0.74 ± 0.63	0.50
Kane keratoconus	0.09 ± 0.74	0.55 ± 0.50	0.13

MAE = mean absolute prediction error; MedAE = median absolute prediction error; PE = mean prediction error

All values expressed in diopters

^*One-sample t test, significant after Holm-Bonferroni correction