| Limbal relaxing incisions versus on-axis incisions to reduce corneal astigmatism at the time of cataract surgery. | |
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MedLine Citation:
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PMID: 16473215 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: To compare limbal relaxing incisions (LRIs) with placement of the corneal cataract incision on the steepest keratometric axis for the reduction of preexisting corneal astigmatism at the time of cataract surgery. SETTING: The Queen Elizabeth Hospital, Adelaide, South Australia, Australia. METHODS: In a prospective single center study, patients having 1.5 diopters (D) or more of keratometric astigmatism were randomly assigned to 2 surgical techniques: on-axis incisions (OAIs) consisting of a single clear corneal cataract incision centered on the steepest corneal meridian or LRIs consisting of 2 arcuate incisions straddling the steepest corneal meridian and a temporal clear corneal incision. Vector analysis of the target axis flattening effect was used to assess the efficacy of treatment. RESULTS: Seventy-one eyes of 71 patients were evaluated, 33 in the OAI group and 38 in the LRI group. Six weeks postoperatively, the flattening effect was 0.41 D (median and interquartile range 0.15 to 0.78 D) in the OAI group and 1.21 D (range 0.43 to 2.25 D) in the LRI group (P = .002). After 6 months, the flattening effect was 0.35 D (range 0.00 to 0.96 D) and 1.10 D (range 0.25 to 1.79 D), respectively (P = .004). CONCLUSION: The amount of astigmatism reduction achieved at the intended meridian was significantly more favorable with the LRI technique, which remained consistent throughout the follow-up period. |
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Authors:
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Claude Kaufmann; Jayanthi Peter; Kenneth Ooi; Simon Phipps; Peter Cooper; Michael Goggin; |
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Publication Detail:
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Type: Comparative Study; Journal Article; Randomized Controlled Trial |
Journal Detail:
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Title: Journal of cataract and refractive surgery Volume: 31 ISSN: 0886-3350 ISO Abbreviation: J Cataract Refract Surg Publication Date: 2005 Dec |
Date Detail:
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Created Date: 2006-02-13 Completed Date: 2006-05-04 Revised Date: 2009-06-26 |
Medline Journal Info:
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Nlm Unique ID: 8604171 Medline TA: J Cataract Refract Surg Country: United States |
Other Details:
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Languages: eng Pagination: 2261-5 Citation Subset: IM |
Affiliation:
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Department of Ophthalmology, University of Zurich, Zurich, Switzerland. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Aged, 80 and over Astigmatism / surgery* Cataract Extraction* Female Humans Lens Implantation, Intraocular Limbus Corneae / surgery* Male Prospective Studies Visual Acuity |
| Comments/Corrections | |
Comment In:
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J Cataract Refract Surg. 2006 Sep;32(9):1408; author reply 1408
[PMID:
16931238
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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