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IOL Calculation Formulas: What Should the Ophthalmologist Expect？

Matching modern IOL formulas to axial length for optimal outcomes

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Modern cataract surgery emphasizes the accurate preoperative calculation of intraocular lens (IOL) power, evolving through generations from linear regression to advanced AI-integrated models. Various formulas such as SRK/T, Hoffer Q, and the newer Barrett Universal II meet specific patient needs. Selection strategies based on axial length range are critical for achieving optimal outcomes: traditional formulas may lag for short and long-eye patients, while newer models provide greater accuracy in diverse anatomical conditions. Further research is essential for refining IOL selection.

Original Source(s)

IOL Calculation Formulas: What Should the Ophthalmologist Expect？

  • by Andrzej Grzybowski , Geng Wang, Danye Mei

  • March 31, 2026

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