Postoperative astigmatic outcomes based on the haptic axis of intraocular lenses inserted in cataract surgery |
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Authors: | Kim In-Tae Park Hae-Young Lopilly Kim Hyun-Seung |
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Institution: | 1Department of Ophthalmology and Visual Science, Yeouido St. Mary''s Hospital, The Catholic University of Korea School of Medicine, Seoul, Korea.;2Department of Ophthalmology and Visual Science, Seoul St. Mary''s Hospital, The Catholic University of Korea School of Medicine, Seoul, Korea. |
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Abstract: | PurposeThis study was conducted to compare post-operative astigmatic outcomes of two groups, with-the-rule (WTR) and against-the-rule (ATR) astigmatism patients, according to the haptic axis of intraocular lenses (IOLs) inserted in cataract surgery.MethodsSeventy-two eyes with WTR astigmatism and 79 eyes with ATR astigmatism had cataract surgery through a clear corneal temporal incision. These two groups of eyes were then each divided into 2 groups based on whether the haptic axis of the inserted IOL was at 180° or 90°. For ATR patients, the outcomes were analyzed according to the three types of IOLs.ResultsThere was no difference in corneal astigmatism, but WTR patients with a 180° haptic axis of the inserted IOL and ATR patients with a 90° hepatic axis of the inserted IOL had a significant decrease in postoperative refractive astigmatism (p < 0.05). The changes in ATR astigmatism according to the IOL type were more effective in single-piece acrylic IOLs than in the three-piece polymethylmethacrylate haptic IOL group.ConclusionsInsertion of the IOL at the 180° haptic axis in WTR patients and at 90° in ATR patients during cataract surgery may have an effect in reducing pre-existing astigmatism. This observed effect was not consistent among the different types of IOLs. |
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Keywords: | Cataract Clear corneal temporal incision Haptic axis of inserted intraocular lens Ocular residual astigmatism |
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