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Published on: September 20, 2024
Astigmatism correction with toric IOL: analysis of visual performance, position, and wavefront error
Lisa Toto1, Luca Vecchiarino, Erminia D'Ugo
1Department of Medicine and Science of Ageing Eye Clinic, G. d' Annunzio University Chieti-Pescara, Chieti-Pescara, Italy. totolisa@hotmail.com
Summary
Toric intraocular lens (IOL) implantation effectively corrects astigmatism in cataract patients, significantly improving vision and maintaining stable IOL position post-surgery.
Area of Science:
- Ophthalmology
- Refractive Surgery
- Biomedical Engineering
Background:
- Cataract surgery often requires correction of pre-existing corneal astigmatism.
- Toric intraocular lenses (IOLs) are designed to address astigmatism during cataract surgery.
Purpose of the Study:
- To evaluate astigmatism correction after toric IOL implantation.
- To assess visual performance and IOL stability.
- To analyze wavefront errors post-surgery.
Main Methods:
- Prospective study of 30 cataract patients undergoing phacoemulsification with AcrySof toric IOL implantation.
- Preoperative and postoperative measurements of corneal and refractive astigmatism.
- Assessment of visual acuity, IOL position, and wavefront aberrations.
Main Results:
- Significant reduction in refractive cylinder from 2.17 D to 0.73 D (P=.001).
- 100% achieved 20/32 and 64% achieved 20/20 uncorrected distance visual acuity.
- Internal spherical aberration decreased; corneal trefoil increased; IOLs showed low decentration and tilt.
Conclusions:
- Toric IOLs are effective for correcting corneal astigmatism in cataract patients.
- The procedure improves visual performance with minimal induction of higher-order aberrations.
- Toric IOLs demonstrate good early and long-term stability in position.
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