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Related Experiment Video

Updated: Apr 1, 2026

Author Spotlight: Advancements in Refractive Surgical Correction for Presbyopia and Exploring Postoperative Visual Acuity
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Differences between low, medium, and large cyclorotation angles in hyperopic LASIK - visual and refractive results.

Margarita Safir1,2, Dror Ben Ephraim Noyman3,4, Adir Sommer3,4

  • 1Department of Ophthalmology, Rabin Medical Center, Petah Tikva, Israel.

European Journal of Ophthalmology
|March 31, 2026
PubMed
Summary
This summary is machine-generated.

Cyclorotation angle magnitude does not significantly impact hyperopic laser assisted in situ keratomileusis (LASIK) outcomes. Modern excimer laser systems correct for cyclorotation, suggesting other factors are more critical for surgical planning.

Keywords:
Corneal procedures for astigmatism < REFRACTIVE SURGERYcomplications of refractive surgery < REFRACTIVE SURGERYcorneal optics < REFRACTIVE SURGERYcorneal procedures for hyperopia < REFRACTIVE SURGERYcorneal topography / imaging systems < REFRACTIVE SURGERY

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Area of Science:

  • Ophthalmology
  • Refractive Surgery

Background:

  • Cyclorotation, the rotational misalignment of the eye, can affect refractive surgery outcomes.
  • Understanding its impact is crucial for optimizing laser assisted in situ keratomileusis (LASIK) results.

Purpose of the Study:

  • To evaluate the impact of varying cyclorotational angle magnitudes on hyperopic LASIK outcomes.
  • To determine if cyclorotation degree influences refractive and visual results.

Main Methods:

  • Retrospective analysis of 621 eyes undergoing hyperopic LASIK (2012-2023).
  • Patients categorized into small, medium, and large cyclorotation angle groups.
  • Comparison of refractive, visual outcomes, efficacy/safety indexes, and Alpins vector analysis.

Main Results:

  • No significant differences observed in visual acuity, refractive error, or efficacy/safety indexes across cyclorotation groups.
  • Alpins vector analysis revealed no significant differences in magnitude or indicators between groups.
  • Preoperative axis showed a minor confounding association with the Alpins index of success.

Conclusions:

  • Cyclorotational angle magnitude does not significantly affect visual or refractive outcomes in hyperopic LASIK with modern excimer laser systems.
  • The degree of cyclorotation appears to have limited clinical relevance in LASIK outcomes when cyclorotation correction is employed.
  • Other factors may play a more significant role in surgical planning for hyperopic LASIK.