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Toric intraocular lens implantation: 100 consecutive cases
Jonathan Stanwood Till1, Paul R Yoder, Thomas K Wilcox
1Lewis-Gale Clinic, Salem, Virginia 24153, USA.
Journal of Cataract and Refractive Surgery
|February 1, 2002
Summary
Toric intraocular lens (IOL) implantation effectively corrected astigmatism in community practice, reducing spectacle dependence for many patients. Early rotation can be corrected with repositioning within the first week.
Area of Science:
- Ophthalmology
- Refractive Surgery
- Corneal Surgery
Background:
- Astigmatism is a common visual impairment.
- Toric intraocular lenses (IOLs) are designed to correct astigmatism during cataract surgery.
Purpose of the Study:
- To evaluate the outcomes of the first 100 consecutive toric posterior chamber silicone IOL implantations performed by community ophthalmologists.
Main Methods:
- Prospective data collection from 81 patients undergoing cataract surgery with toric IOL implantation.
- Utilized various phacoemulsification techniques and a specific toric IOL model (Staar AA4203TF or AA4203TL).
- Assessed IOL orientation and astigmatism correction at multiple postoperative intervals.
Main Results:
- Toric IOLs demonstrated predictable astigmatism correction, with mean corrections of 1.62 D (2.00 D IOL) and 2.86 D (3.50 D IOL) within 15 degrees of the intended axis.
- Postoperative astigmatism was significantly reduced (mean 0.87 D refractive, 2.05 D keratometric).
- Half of patients achieved residual refractive astigmatism of 0.50 D or less; 45% had uncorrected visual acuity of 20/30 or better.
Conclusions:
- Toric IOL implantation can significantly improve vision and decrease spectacle reliance for approximately 20% of patients with astigmatism.
- IOL rotation, if it occurs, is typically within the first week and can be successfully managed by repositioning.