Calculators

A-Constant Optimizer

Personalize A-constant from your outcomes

Current A-constant

Case 1

AL mmMean KIOL DPost SE

Case 2

AL mmMean KIOL DPost SE

Case 3

AL mmMean KIOL DPost SE

Enter at least one complete case

Reference

Back-calculates the A-constant for each eye from the SRK regression (A = P + 2.5L + 0.9K + CR·R), then averages.

Use ≥ 20–30 uncomplicated cases with the same IOL model and biometer, refraction at ≥ 1 month, BCVA ≥ 20/40.