Which intraocular lens power calculation formula uses three constants (a0, a1, a2) and incorporates anterior chamber depth as a variable to improve accuracy across a wide range of axial lengths?

• A SRK/T
• B Hoffer Q
• C Holladay 2
• D Haigis ✓

Explanation

The Haigis formula uses three constants where a1 is linked to the anterior chamber depth and a2 to the axial length. It does not use a personalized A-constant like SRK/T or Holladay, making it highly accurate across short, normal, and long eyes without requiring specific lens constants for each category.

Reference: AAO BCSC Section 11: Lens and Cataract, 2022-2023 ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.