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Author Notes:

Correspondence: J. Bradley Randleman, MD, 1365 B Clifton Road NE, Suite 4500, Atlanta, Georgia 30322; Email: jrandle@emory.edu.

Disclosures: No author has a financial or proprietary interest in any material or method mentioned.

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Research Funding:

Supported in part by Research to Prevent Blindness, Inc., New York, New York, and the National Institutes of Health Core Grant P30 EYO6360, Bethesda, Maryland, USA.

Influence of flap thickness on visual and refractive outcomes after laser in situ keratomileusis performed with a mechanical keratome

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Journal Title:

Journal of Cataract and Refractive Surgery

Volume:

Volume 36, Number 5

Publisher:

, Pages 810-813

Type of Work:

Article | Post-print: After Peer Review

Abstract:

Purpose: To study the effect of flap thickness on visual acuity and refractive outcomes after laser in situ keratomileusis (LASIK) using 2 blade types with a mechanical microkeratome. Setting: Emory Vision, Atlanta, Georgia, USA. Methods: This retrospective analysis was of LASIK cases performed between January 2005 and June 2006 using an Amadeus I microkeratome and an ML7090 CLB blade (blade A) or a Surepass blade (blade B). Outcomes analyzed included flap thickness, uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), manifest refraction spherical equivalent (MRSE), the enhancement rate, and surgical complications 3 months postoperatively. Results: Two hundred sixty-three eyes of 153 patients were analyzed; blade A was used in 158 eyes and blade B, in 105 eyes. The mean flap thickness was significantly thinner with blade A than with blade B (107 μm ± 12 [SD] versus 130 ± 20 μm) (P<.0001). There was no overall correlation with either blade between flap thickness and UDVA, CDVA, or MRSE (all r<0.2). At 3 months, there was no statistically significant difference in UDVA, CDVA, or MRSE between the 2 blade groups at 3 months (all P > .10), and there was no difference in the complication rates. Conclusion: Flap thickness did not affect visual or refractive outcomes with a mechanical micro-keratome with either blade type. Financial Disclaimer: No author has a financial or proprietary interest in any material or method mentioned.

Copyright information:

© 2010 ASCRS and ESCRS

This is an Open Access work distributed under the terms of the Creative Commons Attribution-NonCommerical-NoDerivs 3.0 Unported License (http://creativecommons.org/licenses/by-nc-nd/3.0/).

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