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Table 2 The correlation analysis of biometric values for the expected difference (ED) of each 3rd generation formulas from the Haigis formula

From: The effect of ocular biometric factors on the accuracy of various IOL power calculation formulas

Pearson Correlation

ED of Hoffer Q

ED of Holladay

ED of SRK/T

Corneal curvature (D)

0.206 (p = 0.050)

0.665 (p = 0.000)

0.827 (p = 0.000)

Axial length (mm)

−0.681 (p = 0.000)

−0.653 (p = 0.000)

−0.382 (p = 0.000)

Anterior chamber depth (mm)

−0.756 (p = 0.000)

−0.548 (p = 0.000)

−0.252 (p = 0.016)

Delta ACD (mm)a

0.424 (p = 0.000)

0.201 (p = 0.056)

0.117 (p = 0.271)

  1. aDelta ACD means post-operative 1 month change of anterior chamber depth (ACD)