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Comparison of patient outcomes after implantation of Visian toric implantable collamer lens and iris-fixated toric phakic intraocular lens.

Authors
 SY Lee  ;  HJ Kwon  ;  HS Ahn  ;  KY Seo  ;  EK Kim  ;  T-I Kim 
Citation
 EYE, Vol.25(11) : 1409-1417, 2011 
Journal Title
EYE
ISSN
 0950-222X 
Issue Date
2011
MeSH
Adult ; Algorithms ; Astigmatism/physiopathology ; Astigmatism/surgery* ; Female ; Humans ; Lens Implantation, Intraocular/methods* ; Lenses, Intraocular* ; Male ; Middle Aged ; Myopia/physiopathology ; Myopia/surgery* ; Refraction, Ocular/physiology ; Retrospective Studies ; Visual Acuity/physiology* ; Young Adult
Keywords
Visian toric implantable collamer lens ; iris-fixated toric phakic intraocular lens ; Verisys intraocular lens ; phakic intraocular lens ; correction of astigmatism
Abstract
PURPOSE: We compared visual and refractive outcomes after implantation of Visian toric implantable collamer lenses (toric ICLs) and iris-fixated toric pIOLs (toric Artisans).

PATIENTS AND METHODS: A comparative retrospective analysis was performed. Toric ICLs were implanted into 30 eyes of 18 patients, and toric Artisans into 31 eyes of 22 recipients. We measured the logarithms of the minimum angle of resolution of uncorrected visual acuity (logMAR UCVA), logMAR of best spectacle-corrected corrected VA (logMAR BSCVA), MR, SE, and astigmatism (by the power vector method) before surgery and 1, 3, and 6 months thereafter. Differences between patients receiving each type of lens were compared by using a mixed model of repeated measures.

RESULTS: Visual improvements were evident after operation in both groups. By comparing the attempted to the achieved SE values, we were able to confirm that correction of refractive error was similar in both groups. However, the logMAR UCVA was significantly higher in the toric ICL group at all postoperative time points. Although manifest cylinder power and astigmatism (calculated by using the power vector method) gradually decreased in the toric ICL group, cylinder power 1 month postoperatively increased from -2.62 to -2.75 D; astigmatism was also increased at this time in the toric Artisan group.

CONCLUSION: The two tested toric pIOLs were similar in terms of the ability to correct refractive error, as assessed 3 months postoperatively. However toric ICLs corrected astigmatism more rapidly and safely. Notably, the large difference in astigmatism level between the two groups 1 month postoperatively indicates that toric ICLs are more effective when used to correct astigmatism.
Files in This Item:
T201105067.pdf Download
DOI
10.1038/eye.2011.176
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, Kyoung Yul(서경률) ORCID logo https://orcid.org/0000-0002-9855-1980
Lee, Sang Yeop(이상엽) ORCID logo https://orcid.org/0000-0002-3834-7953
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/94912
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