| Implantation of a customized toric intraocular lens for correction of post-keratoplasty astigmatism. | |
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MedLine Citation:
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PMID: 23348728 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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PurposeTo report visual and refractive outcomes, and endothelial cell loss following primary and secondary 'piggyback' toric intraocular lens (IOL) implantation in patients with high post-penetrating keratoplasty (PK) astigmatism.MethodsProspective case series. Nine eyes of nine patients with post-PK astigmatism were consecutively recruited for implantation of a customized toric IOL. Six underwent simultaneous phacoemulsification (PE) and three pseudophakic eyes had a secondary 'piggyback' toric IOL implanted in the ciliary sulcus. Mean follow-up time was 17.2±7.7 months. Pre- and post-operative uncorrected (UDVA) and best-corrected (BDVA) distance visual acuities and refractive errors were collected for comparison. Cartesian astigmatic vectors were calculated to identify a change in the magnitude of astigmatism pre- compared to postoperatively. Pre- and post-operative endothelial cell counts were also collected for analysis.ResultsUDVA (logMAR) improved from 1.13±0.51 preoperatively to 0.48±0.24 postoperatively (P-value=0.003). There was no significant change in BDVA (P-value=0.905) from 0.31±0.27 to 0.26±0.19. Corneal astigmatism preoperatively was 6.57±4.40 diopters (D). Post-operative refractive cylinder was 0.83±1.09 D compared to 3.89±4.01 D preoperatively (P=0.039). Analysis of astigmatic Cartesian x and y coordinates found a significant reduction postoperatively compared to preoperatively (P=0.005 and P=0.002), respectively. Mean endothelial cell loss was 9.9%.Conclusion:Implantation of a customized primary or secondary 'piggyback' toric IOL serves as an effective modality in treating patients with high post-PK astigmatism.Eye advance online publication, 25 January 2013; doi:10.1038/eye.2012.300. |
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Authors:
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S Srinivasan; D S J Ting; D A M Lyall |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2013-1-25 |
Journal Detail:
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Title: Eye (London, England) Volume: - ISSN: 1476-5454 ISO Abbreviation: Eye (Lond) Publication Date: 2013 Jan |
Date Detail:
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Created Date: 2013-1-25 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8703986 Medline TA: Eye (Lond) Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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1] Department of Ophthalmology, University Hospital Ayr, Ayr, Scotland, UK [2] Faculty of Medicine, University of Glasgow, Glasgow, Scotland, UK. |
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