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Updated: Jan 27, 2026
16:49
Multifocal Electroretinograms
Published on: December 4, 2011
18.9K
Long-term corneal multifocal stability following a presbyLASIK technique analysed by a light propagation algorithm
Asier Villanueva1, Veronica Vargas2, David Mas1
1Department of Optics and Optometry, University of Alicante, Alicante, Spain.
Clinical & Experimental Optometry
|March 14, 2019
Summary
This study evaluated corneal stability three years after central presbyLASIK (presbyopia-correcting LASIK). Results show that multifocal outcomes remained constant, indicating stable corneal behavior following the procedure.
Area of Science:
- Ophthalmology
- Corneal Surgery
- Refractive Surgery
Background:
- Limited long-term data exists for presbyLASIK outcomes.
- Objective evaluation of corneal stability is crucial for presbyLASIK efficacy.
Purpose of the Study:
- To objectively assess corneal stability three years post-excimer laser central presbyLASIK.
- To evaluate the long-term effects of Presbymax central presbyLASIK on corneal topography and optical performance.
Main Methods:
- Longitudinal, retrospective study of 24 eyes treated with central Presbymax presbyLASIK.
- Corneal topography analysis at 3 months, 1 year, and 3 years post-surgery.
- Light propagation algorithm used to analyze simulated light behavior and measure corneal depth of focus.
Main Results:
- Corneal multifocality outcomes remained stable (p > 0.05) over the three-year follow-up.
- Results were consistent for both myopic and hyperopic treatments.
- Stability was observed across different pupillary diameters (3.0 mm and 6.0 mm).
Conclusions:
- Light propagation analysis confirms stable outcomes after Presbymax central presbyLASIK.
- The multifocal anterior corneal surface demonstrates consistent performance three years post-procedure.
- This study provides objective evidence of long-term corneal stability following central presbyLASIK.
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