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Table 4 Lens constants after standard optimization and optimization based on gender

From: Gender differences in refraction prediction error of five formulas for cataract surgery

 

Standard Optimization

Optimization by Gender

Male

Female

Formula

Constant

A Constant

A Constant

A Constant

Holladay1

Surgeon Factor

1.867

1.952

1.805

SRK/T

A constant

119.093

119.264

118.977

Hoffer Q

ACD

5.722

5.802

5.665

Haigis

a0

−0.737

−0.694

−0.766

Barrett

Lens Factor

1.95

2.01

1.91