| A new central-peripheral corneal curvature method for intraocular lens power calculation after excimer laser refractive surgery. | |
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MedLine Citation:
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PMID: 23289447 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Purpose: To propose the central-peripheral (C-P) method, which requires no data history to calculate intraocular lens (IOL) powers for eyes that underwent laser in situ keratomileusis (LASIK), and compare the accuracy of the C-P method with other IOL formulas for eyes after LASIK. Methods: Sixteen patients with cataract (25 eyes) who underwent myopic LASIK were analysed retrospectively. The C-P method is a modified double-K method using the SRK/T formula, in which the estimated pre-LASIK keratometric power calculated from the post-LASIK peripheral anterior sagittal power (also called the axial power) is used for the Kpre in the double-K method using the SRK/T formula, and the post-LASIK anterior sagittal power is used for the Kpost. We compared the accuracy of the C-P method with other popular IOL calculation formulas for use in eyes after LASIK. Results: The median values of the arithmetic and absolute prediction errors with the C-P method were 0.11 diopter (D) (range, -1.67 to 1.97 D) and 0.55 D (range, 0.02-1.97 D), respectively. The prediction error using the C-P method was within ±0.5 D in 48% of eyes, within -1.0 to +0.5 D in 60% of eyes, and within ±1.0 D in 68% of eyes. The C-P method resulted in a significantly higher percentage of eyes within ±0.5 D than the BESSt formula, Shammas-PL formula, true net power method, double-K method using 43.5 D for Kpre, and Feiz-Mannis method. Conclusion: The C-P method may be a good option for calculating IOL powers in eyes undergoing cataract surgery after LASIK when the preoperative LASIK data are unavailable. |
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Authors:
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Megumi Saiki; Kazuno Negishi; Naoko Kato; Hiroyuki Arai; Ikuko Toda; Hidemasa Torii; Murat Dogru; Kazuo Tsubota |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2013-1-7 |
Journal Detail:
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Title: Acta ophthalmologica Volume: - ISSN: 1755-3768 ISO Abbreviation: Acta Ophthalmol Publication Date: 2013 Jan |
Date Detail:
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Created Date: 2013-1-7 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101468102 Medline TA: Acta Ophthalmol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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© 2013 The Authors Acta Ophthalmologica © 2013 Acta Ophthalmologica Scandinavica Foundation. |
Affiliation:
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Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan Minatomirai Eye Clinic, Kanagawa, Japan Minamiaoyama Eye Clinic, Tokyo, Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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