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Related Experiment Video

Updated: Jan 21, 2026

Author Spotlight: Enhancing Visual Outcomes in Cataract Surgery: A Novel Technique to Prevent Posterior Capsular Opacification Through IOL Rotation
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Updated practical intraocular lens power calculation after refractive surgery.

Gowtham Jonna1, Prabjot Channa

  • 1Albert Einstein College of Medicine, Montefiore Medical Center, Department of Ophthalmology and Visual Sciences, Bronx, NY, USA.

Current Opinion in Ophthalmology
|May 18, 2013
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Summary

Accurate intraocular lens (IOL) power calculation for cataract surgery in eyes with prior kerato-refractive surgery is now more achievable. Online IOL calculators offer efficient and reliable refractive outcomes, even without advanced equipment.

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Area of Science:

  • Ophthalmology
  • Refractive Surgery
  • Cataract Surgery

Background:

  • Over 40 million individuals globally have had kerato-refractive surgery.
  • These patients often require cataract surgery, presenting challenges for achieving optimal refractive results.
  • Accurate intraocular lens (IOL) power calculation is crucial in these 'non-virgin' eyes.

Purpose of the Study:

  • To review practical and relevant methods for determining IOL power in eyes post-kerato-refractive surgery.
  • To highlight advancements and reliable options for accurate IOL power calculation.

Main Methods:

  • Review of current techniques and instrumentation for corneal power assessment.
  • Evaluation of online IOL calculators as practical tools.
  • Analysis of emerging literature on IOL power determination methods.

Main Results:

  • Modern corneal tomography instruments enhance accuracy in post-refractive eyes.
  • Online IOL calculators, like the American Society of Cataract and Refractive Surgery (ASCRS) calculator, are efficient and reliable.
  • Recent evidence validates the accuracy of these online calculators.

Conclusions:

  • Methods not requiring prior refractive data are increasingly supported.
  • Online IOL calculators provide user-friendly and effective solutions for accurate IOL power determination.
  • These tools significantly aid cataract surgery planning in eyes with prior kerato-refractive procedures.