Table 3.

Overview of prediction error outcomes in different IOL calculation formulas per stage

Formula	Stage I			Stage II			Stage III
	MPE ± SD	MAE ± SD	MedAE	MPE ± SD	MAE ± SD	MedAE	MPE ± SD	MAE ± SD	MedAE
SRK/T	0.22 ± 0.54	0.47 ± 0.34	0.34	0.11 ± 0.70	0.56 ± 0.41	0.39	0.72 ± 1.34	1.36 ± 0.12	1.33
Barrett Universal II	0.35 ± 0.65*	0.54 ± 0.50	0.40	0.91 ± 0.55*	0.92 ± 0.54	0.86	1.57 ± 0.43*	1.57 ± 0.43	1.76
Barrett True-K predicted	0.05 ± 0.59	0.39 ± 0.44	0.22	0.28 ± 0.58	0.49 ± 0.40	0.39	0.46 ± 0.46	0.54 ± 0.29	0.56
Barrett True-K measured	0.01 ± 0.58	0.44 ± 0.37	0.29	0.19 ± 0.59	0.43 ± 0.43	0.32	0.49 ± 0.19	0.49 ± 0.19	0.44
Kane	0.30 ± 0.66*	0.52 ± 0.50	0.37	0.89 ± 0.48*	0.90 ± 0.45	0.92	2.04 ± 0.66*	2.04 ± 0.66	1.90
Kane keratoconus	0.30 ± 0.66*	0.52 ± 0.50	0.37	−0.15 ± 0.74	0.58 ± 0.47	0.51	−0.75 ± 0.65	0.75 ± 0.65	0.84

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