Table 2.

Refractive prediction errors, SD, MAE, and MedAE.

FORMULA	ME	SD	MAE	MedAE	± 0.50 (%)	± 0.75 (%)	± 1.00(%)
Group 1 AL ≤ 22 mm
SRK/T	− 0.15	0.31	0.35	0.28	81.0	100.0	100
Haigis	− 0.03	0.35	0.35	0.24	71.4	95.2	100
Hoffer Q	− 0.08	0.20	0.32	0.29	81.8	95.4	100
Holladay I	− 0.20	0.23	0.30	0.26	90.5	100	100
Kane	− 0.07	0.24	0.27	0.28	90.5	100	100
Barrett	− 0.23	0.28	0.28	0.26	86.4	95.5	100
Group 2 22 < AL < 25 mm
SRK/T	− 0.18	0.23	0.27	0.24	87.1	96.9	100
Haigis	− 0.16	0.40	0.36	0.31	75.8	93.9	100
Hoffer Q	− 0.22	0.32	0.28	0.25	87.1	97.8	100
Holladay I	− 0.23	0.25	0.26	0.22	88.9	99.1	100
Kane	− 0.17	0.28	0.28	0.24	83.0	96.9	100
Barrett	− 0.23	0.28	0.28	0.23	82.5	96.4	100
Group 3 AL ≥ 25 mm
SRK/T	− 0.30	0.28	0.19	0.17	93.1	100	100
Haigis	− 0.43	0.36	0.27	0.24	88.9	100	100
Hoffer Q	− 0.38	0.37	0.23	0.25	93.1	96.5	100
Holladay I	− 0.37	0.37	0.22	0.17	89.7	100	100
Kane	− 0.24	0.28	0.21	0.16	92.6	100	100
Barrett	− 0.22	0.37	0.24	0.21	89.7	100	100

Percentage of Eyes Within Certain Range of Prediction Error.

*p < 0.05 statistical significance.