Table 3 ELP estimation error: mean arithmetic error (ME), mean absolute error (MAE), estimation error (EE) range, and p values of the statistical tests performed, for the different methods.

From: Estimation of intraocular lens position from full crystalline lens geometry: towards a new generation of intraocular lens power calculation formulas

Method

ME ± SD (µm)

P value (t-test)

MAE ± SD (µm)

EE range (µm)

P value (multiple test, Bonferroni correction)

Proposed

0 ± 81

1

65 ± 45

−102 to 144

—

Olsen Constant

−26 ± 186

0.64

158 ± 91*

−297 to 289

0.02

Olsen C optimized

1 ± 181

0.97

145 ± 101

−263 to 312

0.34

SRK/T

−187 ± 211Ɨ

0.01

238 ± 145*

−501 to 125

0.02

SRK/T A optimized

0 ± 182

0.99

151 ± 91

−350 to 250

0.65

Intersection approach

−79 ± 201

0.20

177 ± 114*

−352 to 380

0.04

  1. ME = Mean arithmetic estimation error; MAE = Mean absolute estimation error; SD = Standard deviation; EE = Estimation error.
  2. ƗME significantly different from zero (t-test).
  3. *MAE significantly different than the proposed method (with Bonferroni correction).
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