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Updated: Jun 19, 2026

Correction of Presbyopia by Monocular Bi-Aspheric Ablation Profile
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Visual performance after LASIK for a Q-optimized and a standard ablation algorithm.

César Villa1, José R Jiménez, Rosario G Anera

  • 1Clínicas Novovisión, Paseo de la Castellana, Madrid, Spain.

Applied Optics
|October 22, 2009
PubMed
Summary
This summary is machine-generated.

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Laser vision correction using LASIK (laser in situ keratomileusis) can impact visual performance. A Q-optimized algorithm showed significantly less visual deterioration compared to the Munnerlyn formula.

Area of Science:

  • Ophthalmology
  • Optometry
  • Vision Science

Background:

  • Laser vision correction procedures like LASIK aim to improve refractive errors.
  • Different ablation algorithms may influence post-operative visual quality.
  • Assessing visual performance comprehensively is crucial for evaluating surgical outcomes.

Purpose of the Study:

  • To compare visual performance after LASIK using a Q-optimized ablation algorithm versus the Munnerlyn formula.
  • To evaluate changes in aberrometry, contrast sensitivity, and night vision disturbances post-LASIK.

Main Methods:

  • 102 patients undergoing LASIK were evaluated.
  • Visual functions including aberrometry, contrast sensitivity function (CSF), and a low-illumination discrimination test were measured before and after surgery.

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Last Updated: Jun 19, 2026

Correction of Presbyopia by Monocular Bi-Aspheric Ablation Profile
05:46

Correction of Presbyopia by Monocular Bi-Aspheric Ablation Profile

Published on: September 20, 2024

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter
05:14

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter

Published on: September 16, 2025

  • Two distinct ablation algorithms (Q-optimized and Munnerlyn) were compared.

    • Main Results:

    • Both algorithms resulted in a decline in aberrometry, CSF, binocular summation, and discrimination index.
    • The deterioration in visual functions was significantly less pronounced with the Q-optimized algorithm compared to the Munnerlyn formula.
    • The low-illumination discrimination test effectively quantified night-vision disturbances.

    Conclusions:

    • LASIK surgery, regardless of the algorithm, can lead to measurable changes in visual performance.
    • A Q-optimized ablation algorithm appears to offer superior visual outcomes with less deterioration compared to the Munnerlyn formula.
    • Further research into optimizing ablation profiles is warranted to minimize visual side effects after LASIK.