Biometry and Intraocular Lens (IOL) power calculations are the cornerstone of modern cataract surgery, transforming the procedure from simple lens removal to a precise refractive intervention. The goal is no longer just to restore sight, but to achieve "refractive neutrality" or a specific target vision without the heavy reliance on glasses. The Role of Biometry
Adjusted for axial length but still limited. Biometry & IOL Power Calculations - PDF
Very high myopes (long eyes) or hyperopes (short eyes) require specialized formulas like the Wang-Koch adjustment. Biometry and Intraocular Lens (IOL) power calculations are
Biometry is the measurement of the eye's physical dimensions. To calculate the correct IOL power, surgeons need two primary measurements: which provides its refractive power.
The curvature of the cornea, which provides its refractive power.