Once measurements are taken, they are plugged into mathematical formulas to predict the necessary lens power. These formulas have evolved through "generations" based on how they estimate the —the final resting place of the IOL in the eye.
Adjusted for axial length but still limited. Biometry & IOL Power Calculations - PDF
💡 Even a 1mm error in axial length measurement can result in a 2.5 to 3.0 diopter error in the final visual outcome. This highlights why high-precision biometry and modern formulas are non-negotiable for patient satisfaction. Once measurements are taken, they are plugged into