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Related Experiment Video

Updated: Aug 17, 2025

Author Spotlight: Advancements in Refractive Surgical Correction for Presbyopia and Exploring Postoperative Visual Acuity
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Refractive error after combined phaco-vitrectomy: A multicentric study.

Raphael Kilian1, Emanuele Crincoli2,3, Clara Rizzo1

  • 1Ophthalmic Unit, Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy.

European Journal of Ophthalmology
|December 12, 2022
PubMed
Summary
This summary is machine-generated.

This study evaluated intraocular lens (IOL) power formulas for combined phaco-vitrectomy surgery. None of the tested formulas accurately predicted post-operative refractive error, indicating a need for improved calculation methods.

Keywords:
Combined phaco-vitrectomyHolladay 2IOL-power formulaOlsenSRK-Tpostoperative refractive error

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Area of Science:

  • Ophthalmology
  • Retinal Surgery
  • Refractive Surgery

Background:

  • Combined phaco-vitrectomy addresses various macular conditions.
  • Accurate intraocular lens (IOL) power calculation is crucial for optimal visual outcomes.
  • Existing IOL formulas may have limitations in complex surgical cases.

Purpose of the Study:

  • To assess post-operative refractive error (RE) after combined phaco-vitrectomy.
  • To compare the accuracy of SRK-T, Olsen's, and Holladay-2 IOL power formulas.
  • To identify the formula providing the best refractive outcomes in this patient cohort.

Main Methods:

  • Retrospective multicentric study of 67 eyes undergoing combined phaco-vitrectomy.
  • Comparison of preoperative expected RE with postoperative RE.
  • Analysis using multinomial logistic regression for SRK-T, Olsen's, and Holladay-2 formulas.

Main Results:

  • SRK-T and Holladay-2 formulas resulted in significant myopic shifts.
  • Olsen's formula led to a significant hyperopic error.
  • All formulas showed inaccuracies in predicting postoperative refractive error, irrespective of IOL power.

Conclusions:

  • Current IOL power formulas demonstrate limitations in predicting refractive outcomes after combined phaco-vitrectomy.
  • Further research is needed to refine IOL calculation methods for these procedures.
  • Improved formula precision is essential for minimizing refractive surprises in patients.