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Comparison of refractive stability after non-toric versus toric intraocular lens implantation during cataract surgery.

Authors
 Jei Hun Jeon  ;  Rim Hyung Taek Tyler  ;  Kyoung Yul Seo  ;  Eung Kweon Kim  ;  Tae-im Kim 
Citation
 American Journal of Ophthalmology, Vol.157(3) : 658-665.e1, 2014 
Journal Title
 American Journal of Ophthalmology 
ISSN
 0002-9394 
Issue Date
2014
Abstract
PURPOSE: To compare refractive state changes in eyes implanted with toric intraocular lenses (IOLs) vs non-toric IOLs, after cataract extraction. DESIGN: Retrospective, comparative. METHODS: In a single institution, 121 eyes underwent phacoemulsification and implantation with either non-toric IOLs or toric IOLs. The spherical value, cylindrical value, spherical equivalent (SE) of refractive error, and visual acuity were measured preoperatively and 1, 3, and 6 months after surgery. Main outcome measures were the pattern of changes of spherical, cylindrical, and SE values based on postoperative time, between different IOL types. RESULTS: The groups, which included patients who underwent surgery with SN60WF (Group I), SA6AT3 (Group II-3), SA6AT4 (Group II-4), and SA6AT5 lenses (Group II-5), contained 37, 29, 23, and 32 eyes, respectively. The cylindrical value was significantly decreased in all groups (P < .05). Before surgery, the SE of refractive errors was estimated as -0.21, -0.10, -0.20, and -0.22 in the respective groups. The actual remaining SE values were -0.19, -0.24, -0.42, and -0.56 at 1 month; -0.17, -0.26, -0.57, and -0.64 at 3 months; and -0.17, -0.26, -0.70, and -0.74 at 6 months postoperatively, respectively. The follow-up SE values in groups I and II-3 were similar (P > .05 in both groups); however, significant myopic changes were observed in Groups II-4 and II-5 after surgery, vs Group I (P < .05). CONCLUSION: Selection of toric IOLs for cataract surgery requires a refined formula to precisely determine necessary IOL power, especially in cases with high levels of astigmatism, to reliably and accurately prevent myopic outcomes.
Full Text
http://www.sciencedirect.com/science/article/pii/S0002939413007630
DOI
10.1016/j.ajo.2013.12.003
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Ophthalmology (안과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Eung Kweon(김응권) ORCID logo https://orcid.org/0000-0002-1453-8042
Kim, Tae Im(김태임) ORCID logo https://orcid.org/0000-0001-6414-3842
Seo, Kyuong Yul(서경률) ORCID logo https://orcid.org/0000-0002-9855-1980
Rim, Tyler Hyungtaek(임형택)
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/138993
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