Effect of Toric Intraocular Lens Implantation on Astigmatism in Cataract Surgery.
10.3341/jkos.2015.56.10.1544
- Author:
Yong Jae CHA
1
;
Mee Kum KIM
;
Won Ryang WEE
Author Information
1. Department of Ophthalmology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea. kmk9@snu.ac.kr
- Publication Type:Clinical Trial ; Original Article
- Keywords:
Astigmatism;
Cataract;
Tecnis(R) toric IOL;
Vector analysis
- MeSH:
Astigmatism*;
Axis, Cervical Vertebra;
Cataract*;
Humans;
Informed Consent;
Lens Implantation, Intraocular*;
Lenses, Intraocular*;
Phacoemulsification;
Prospective Studies;
Seoul;
Visual Acuity
- From:Journal of the Korean Ophthalmological Society
2015;56(10):1544-1551
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: 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.
