đź’ˇ 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.
The total length of the eye from the cornea to the retina. Biometry & IOL Power Calculations - PDF
Used a simple regression equation; often inaccurate for very long or short eyes. đź’ˇ Even a 1mm error in axial length
These use complex variables (like anterior chamber depth and lens thickness) or Artificial Intelligence to account for the eye's unique geometry. Challenges and Precision which provides its refractive power.
Patients who have had LASIK or PRK have altered corneal shapes that traditional formulas often miscalculate.
The curvature of the cornea, which provides its refractive power.