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Updated: Jul 3, 2026
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Rotating the Intraocular Lens to Prevent Posterior Capsular Opacification in Cataract Surgeries
Published on: July 7, 2023
Long-term Staar toric intraocular lens rotational stability
Mario Jampaulo1, Michael D Olson, Kevin M Miller
1Jules Stein Eye Institute, Department of Ophthalmology, David Geffen School of Medicine at UCLA, Los Angeles, California 90095, USA.
American Journal of Ophthalmology
|July 29, 2008
Summary
Staar toric intraocular lens (IOL) implants demonstrate excellent rotational stability long-term after cataract surgery. This stability is maintained even after laser posterior capsulotomy, ensuring consistent visual outcomes.
Area of Science:
- Ophthalmology
- Biomedical Engineering
- Surgical Innovation
Background:
- Cataract surgery involves implanting intraocular lenses (IOLs) to restore vision.
- Toric IOLs correct astigmatism, requiring precise axis alignment for efficacy.
- Posterior capsule opacification (PCO) is a common complication necessitating treatment, potentially affecting IOL position.
Purpose of the Study:
- To assess the long-term rotational stability of Staar toric intraocular lens (IOL) implants.
- To evaluate IOL axis orientation from two weeks post-cataract surgery through two weeks after laser posterior capsulotomy.
Main Methods:
- Retrospective interventional case series analyzing 115 eyes from 72 patients.
- Involved implantation of Staar toric IOL models AA4203TF and AA4203TL.
- IOL axis alignment was documented using slit-lamp retroillumination photographs before and after laser capsulotomy in 25 eyes.
Main Results:
- The mean difference in IOL axis alignment before and after laser capsulotomy was minimal (1.36 degrees).
- No IOL exhibited an axis change exceeding 5 degrees, within the expected measurement error.
- Demonstrates significant rotational stability of the toric IOL.
Conclusions:
- Staar toric IOLs exhibit no significant long-term changes in axis orientation beyond the early postoperative period.
- Rotational stability is maintained throughout the progression of posterior capsule opacification and subsequent laser treatment.
- Supports the reliable performance of Staar toric IOLs in maintaining astigmatic correction over time.
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