Table 7 Pairwise comparison of the prediction accuracy (i.e., the percentage of eyes within a given range of prediction error) between the MM formula and each of the other four formulae (SRK/T, Hoffer Q, Holladay I and Haigis) for the different types of eyes (long, long medium, medium, short and all eyes), using the McNemar test at a statistical significance level of 5%.

Monofocal Lenstec Softec HDO
Pairwise comparison of the prediction accuracy p-values for McNemar test
Long eyes
	% Rx within ± 0.5D	% Rx within ± 1.0D	% Rx within ± 1.5D
MM vs SRK/T	< 0.001^b	< 0.001^b	< 0.001^b
MM vs Hoffer Q	< 0.001^b	0.999^a	0.999^a
MM vs Holladay I	< 0.001^b	0.999^a	0.999^a
MM vs Haigis	0.041^b	0.999^a	0.999^a
Long medium eyes
	% Rx within ± 0.5D	% Rx within ± 1.0D	% Rx within ± 1.5D
MM vs SRK/T	< 0.001^b	< 0.001^b	< 0.001^b
MM vs Hoffer Q	< 0.001^b	0.789^a	0.999^a
MM vs Holladay I	0.211^a	0.999^a	0.999^a
MM vs Haigis	0.864^a	0.752^a	0.999^a
Medium eyes
	% Rx within ± 0.5D	% Rx within ± 1.0D	% Rx within ± 1.5D
MM vs SRK/T	< 0.001^b	< 0.001^b	0.999^a
MM vs Hoffer Q	< 0.001^b	< 0.001^b	0.999^a
MM vs Holladay I	< 0.001^b	< 0.001^b	0.617^a
MM vs Haigis	< 0.001^b	< 0.001^b	0.999^a
Short eyes
	% Rx within ± 0.5D	% Rx within ± 1.0D	% Rx within ± 1.5D
MM vs SRK/T	0.003^b	< 0.001^b	< 0.001^b
MM vs Hoffer Q	0.585^a	0.770^a	0.041^c
MM vs Holladay I	0.001^b	0.607^a	0.041^c
MM vs Haigis	0.831^a	< 0.001^c	0.041^c
All eyes
	% Rx within ± 0.5D	% Rx within ± 1.0D	% Rx within ± 1.5D
MM vs SRK/T	< 0.001^b	< 0.001^b	< 0.001^b
MM vs Hoffer Q	< 0.001^b	0.013^b	0.023^c
MM vs Holladay I	< 0.001^b	0.013^b	0.343^a
MM vs Haigis	< 0.001^b	0.391^a	0.023^c

Search