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. 2015 Jan 24;15:8. doi: 10.1186/1471-2415-15-8

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© Zhang et al.; licensee BioMed Central. 2015

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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The predictability of spherical refraction with SMILE surgery. The attempted versus achieved spherical correction in the absolute value with SMILE surgery at 1 month (A), 6 months (B) and 12 months (C). Above the green dashed line in the middle is overcorrection and below is undercorrection. The red solid line indicates the outcome of linear regression analysis.