Skip to main content

Table 2 Predictive accuracies of the various IOL power assessment formulas for eyes with normal axial length

From: Different lens power calculation formulas for the prediction of refractive outcome after phacoemulsification with silicone oil removal

Formula Predicted SE, D Mean prediction error, D# P-value† Absolute error, D
SRK/T −0.40 ± 0.38 −0.18 ± 0.92 0.16 0.74 ± 0.53
Holladay 1 − 0.46 ± 0.42 −0.15 ± 0.88 0.17 0.73 ± 0.49
Holladay 2 −0.55 ± 0.46 −0.06 ± 0.94 0.39 0.73 ± 0.56
Haigis − 0.45 ± 0.48 −0.15 ± 0.87 0.19 0.72 ± 0.49
Hoffer Q − 0.54 ± 0.51 −0.05 ± 0.90 0.39 0.71 ± 0.54
Barrett Universal II − 0.52 ± 0.46 − 0.06 ± 0.90 0.32 0.72 ± 0.52
P-value*   0.983   0.999
  1. Values are presented as the mean ± standard deviation. IOL, intraocular lens; SE, spherical equivalent; #Postoperative SE - predicted SE. †P-values derived by the Wilcoxon signed-rank test; *P-values* obtained by one-way analysis of variance