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Updated: May 22, 2026
05:46
Correction of Presbyopia by Monocular Bi-Aspheric Ablation Profile
Published on: September 20, 2024
[Light adjustable lens. New options for customized correction of presbyopia]
F H Hengerer1, J Böcker, B H Dick
1Universitäts-Augenklinik, Knappschaftskrankenhaus, Ruhr-Universität Bochum, In der Schornau 23- 25, 44892, Bochum, Deutschland. fritz.hengerer@kk-bochum.de
Summary
This study shows that a customized near add (CNA) created using a light-adjustable intraocular lens (LAL) improves vision. The LAL technology offers patients good near, intermediate, and distance sight after cataract surgery.
Area of Science:
- Ophthalmology
- Biomedical Engineering
Background:
- Presbyopia, an age-related loss of near focusing ability, affects millions worldwide.
- Current treatments for presbyopia have limitations, driving the need for innovative solutions.
- Light-adjustable intraocular lenses (LALs) offer a novel approach to correcting refractive errors post-surgery.
Purpose of the Study:
- To prospectively evaluate new algorithms for presbyopia treatment using a light-adjustable intraocular lens (LAL).
- To assess the efficacy of a customized near add (CNA) based on individual pupil size.
Main Methods:
- 15 patients undergoing cataract surgery received a LAL.
- Following implantation, the LAL was adjusted to correct residual refractive error.
- A CNA was created based on individual pupil size in one eye, with the fellow eye corrected for emmetropia.
Main Results:
- No intraoperative or postoperative complications were reported.
- Patients showed significant improvements in near (0.97±0.18), distance (0.78±0.18), and intermediate (0.92±0.12) vision.
- The customized near add provided a good range of visual acuity across distances.
Conclusions:
- The creation of a CNA based on individual pupil size is effective for presbyopia treatment with LALs.
- This preliminary study suggests LAL technology can provide a comprehensive visual solution.
- Further research is warranted to confirm long-term outcomes and broader applicability.
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