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
Measuring "Total Corneal Power" (both the front and back of the cornea) is essential for Toric IOLs, which correct astigmatism. Biometry & IOL Power Calculations - PDF
Adjusted for axial length but still limited. These use complex variables (like anterior chamber depth
Patients who have had LASIK or PRK have altered corneal shapes that traditional formulas often miscalculate. Biometry & IOL Power Calculations - PDF