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The Ophthalmologist / Issues / 2026 / March / IOL Calculation Formulas What Should the Ophthalmologist Expect
Anterior Segment Educational Tools & Resources Discussion Cataract Refractive

IOL Calculation Formulas: What Should the Ophthalmologist Expect?

Matching modern IOL formulas to axial length for optimal outcomes

By Andrzej Grzybowski , Geng Wang, Danye Mei 3/31/2026 3 min read

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5 Key Takeaways
  • 1

    Modern cataract surgery relies on precise intraocular lens (IOL) power calculations for optimal outcomes.

  • 2

    IOL calculation formulas have evolved from simple regression models to advanced AI-integrated systems for improved accuracy.

  • 3

    Personalized IOL formula selection is essential, as no single formula meets the diverse needs of eyes with anatomical variations.

  • 4

    For short axial lengths, AI-based formulas like PEARL-DGS show superior accuracy compared to traditional options.

  • 5

    The Wang-Koch optimized SRK/T formula is effective for long axial lengths, while newer formulas like Kane and EVO 2.0 offer enhanced predictive accuracy.

This content is an AI-generated, fully rewritten summary based on a published scholarly article. It does not reproduce the original text and is not a substitute for the original publication. Readers are encouraged to consult the source for full context, data, and methodology.

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