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Astigmatism correction in cataract surgery with Rayner toric intraocular lenses

Original Research

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Authors: Sally L Painter, Kikkeri S Arun, Jonathan K Kam, et al.

Published Date September 2010 Volume 2010:2 Pages 79 - 84
DOI: http://dx.doi.org/10.2147/OPTO.S11821

Sally L Painter, Kikkeri S Arun, Jonathan K Kam, CK Patel

Oxford Eye Hospital, John Radcliffe Hospital, Headley Way, Headington, Oxford, United Kingdom

Background: Cataract surgery is increasingly regarded as a refractive procedure. Corneal astigmatism can be reduced by the insertion of a toric intraocular lens (T-IOL). Rayner T-flex T-IOLs are licensed for the correction of astigmatism.

Methods: In this retrospective study, 46 eyes from 34 patients, in whom T-IOLs were inserted, have been examined. Astigmatism was analyzed using power vectors.

Results: Postoperatively, 72% had unaided vision of 6/9 or better, with 42% having <0.25 diopters (D) of residual cylinder and 78% having <1.5 D of residual cylinder, compared with 6.9% preoperatively. Once astigmatism had been converted to power vectors, J0 (measure of astigmatism with an axis of 0°) reduced in magnitude from
-0.81 D ± 0.85 to 0.09 D ± 0.42 (P < 0.001).

Conclusion: Rayner T-flex lenses can be reliably used to correct corneal astigmatism.

Keywords: Toric intraocular lens, cataract surgery, astigmatism








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