Table 4.

Predicted SE and Actual SE. Predicted errors, mean and median absolute errors, and root-mean-square absolute errors for Hoffer Q, Holladay 1, Holladay 2, Haigis and Hill-RBF 2.0 formulas.

Patient	Eye	Predicted SE (Hoffer-Q)	Actual SE	Predicted Error (Hoffer-Q)	Predicted Error (Holladay 1)	Predicted Error (Holladay 2)	Predicted Error (Haigis)	Predicted Error (Hill-RBF 2.0)
1	L	−0.18	−0.5	−0.32	0.21	−0.26	0.44	0.22
	R	−0.69	−0.5	0.19	0.16	−0.41	0.46	0.47
2	L	0.09	−0.25	−0.34	Not in range	Not in range	Not in range	Not in range
	R	−0.53	−2.625	−2.1	−2.65	−2.535	−1.955	−2.02
3	L	−0.6	−1.625	−1.03	−0.78	−0.715	0.135	0.02
4	R	0.2	−0.25	−0.45	0.14	0.44	0.79	0.7
5	R	−0.6	−1.375	−0.78	−0.11	−0.785	0.425	0.94
	L	−0.3	−0.5	−0.2	0.43	0.14	1.12	1.3
6	R	−0.5	−0.875	−0.38	0.23	0.495	1.305	1.17
7	R	−0.7	−0.25	0.45	−1.68	1.38	1.94	−2.1
	L	−0.5	−1.5	−1	−0.16	−0.19	0.55	−0.23
8	R	−0.7	−0.75	−0.05	0.39	−0.16	1.11	0.93
9	R	−0.6	−1	−0.4	0.19	0.02	0.82	0.65
10	L	−0.1	−0.125	−0.03	0.465	0.265	0.605	0.84
Mean predicted error				−0.46	−0.24	−0.18	0.60	0.22
Mean absolute error				0.55	0.58	0.60	0.90	0.89
Median absolute error				0.39	0.23	0.41	0.79	0.84
Root-mean-square absolute error				0.76	0.93	0.89	1.05	1.08

L = left; R = right; SE = spherical equivalent.