J Korean Ophthalmol Soc > Volume 56(10); 2015 > Article
Journal of the Korean Ophthalmological Society 2015;56(10):1544-1551.
DOI: https://doi.org/10.3341/jkos.2015.56.10.1544    Published online October 15, 2015.
Effect of Toric Intraocular Lens Implantation on Astigmatism in Cataract Surgery.
Yong Jae Cha, Mee Kum Kim, Won Ryang Wee
1Department of Ophthalmology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea. kmk9@snu.ac.kr
2Biomedical Research Institute, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.
백내장 수술 후 난시교정용 인공수정체를 이용한 난시 교정 효과
서울대학교 의과대학 서울대학교병원 안과학교실1, 서울대학교 의과대학 서울대학교병원 의생명연구원2
Received: 20 March 2015   • Revised: 24 June 2015   • Accepted: 22 September 2015
To evaluate the efficacy of Tecnis(R) toric intraocular lens (IOL) implantation for the correction of astigmatism and rotational stability during cataract surgery in patients with cataract and astigmatism. METHODS: We prospectively analyzed 17 eyes of 14 patients with 1 to 4 diopters (D) of corneal astigmatism who underwent phacoemulsification and Tecnis(R) toric IOL implantation at Seoul National University Hospital from June 2013 to May 2014. Informed consent was obtained from all participants before the clinical trial. We evaluated the changes in visual acuity, refraction, astigmatism, IOL axis and higher order aberration for 3 months postoperatively. Power vector analysis was used to analyze astigmatism. RESULTS: The mean uncorrected visual acuity (log MAR) significantly improved from 0.58 +/- 0.34 to 0.26 +/- 0.43 at 3 months postoperatively. The mean refractive astigmatism was significantly decreased by 77.9% from a mean value of -2.67 +/- 0.89 D to -0.59 +/- 0.48 D at 3 months postoperatively. According to power vector analysis, M, B, J0, and J45 were significantly reduced after the surgery. The mean difference between achieved and intended IOL axis was 3.26 degrees clockwise at postoperative 3 months, which was statistically insignificant. Most of the rotational changes were observed within a month after the surgery. CONCLUSIONS: Phacoemulsification and Tecnis(R) toric IOL implantation in patients with cataracts and astigmatism showed efficacy for the correction of astigmatism and rotational stability.
Key Words: Astigmatism;Cataract;Tecnis(R) toric IOL;Vector analysis

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