IOL Calculator

What this tool does

This calculator estimates IOL power and predicted postoperative spherical equivalent (SE) using:

• SRK/T (requires A-constant)

• Holladay 1 (requires Surgeon Factor / SF)
  
  

It also shows:

• Error vs Target (predicted SE minus your refractive aim)

• A power range table around the suggested power

• Print to PDF for either the comparison table or the range table

Important: This is an educational estimator. Always verify with your approved biometry software and your optimized constants.