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. 1994 Sep;20(5):523-6.
doi: 10.1016/s0886-3350(13)80232-5.

Toric intraocular lenses: correcting astigmatism while controlling axis shift

K Shimizu  1 , A Misawa, Y Suzuki
Affiliations

Toric intraocular lenses: correcting astigmatism while controlling axis shift

K Shimizu et al. J Cataract Refract Surg. 1994 Sep.

Abstract

We evaluated the efficacy of toric intraocular lenses (IOLs) implanted in the eyes of 47 patients who had preoperative against-the -rule astigmatism. The lenses, which had a cylinder power of 2.00 diopters (D) (n = 26) or 3.00 D (n = 21), were implanted through a 5.7 mm incision after cataract extraction by phacoemulsification. Best corrected visual acuity three months postoperatively was 20/25 or better in 77% of eyes. The 3.00 D IOLs resulted in better correction than the 2.00 D IOLs when the axis shift of the lens was less than 30 degrees. A negative effect occurred in some eyes in which the lens axis rotated more than 30 degrees. The maximum acceptable axis shift seems to be less than 30 degrees.

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