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. 2016 May 10;5:e18. doi: 10.1017/jns.2016.5

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© The Author(s) 2016

This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 5. — Change of refractive error from post- to pre-treatment tests in treatment () v. control () groups. Values are means, with standard errors represented by vertical bars. Significant treatment × time interaction: * P < 0·05.

Inline graphic — Change of refractive error from post- to pre-treatment tests in treatment () v. control () groups. Values are means, with standard errors represented by vertical bars. Significant treatment × time interaction: * P < 0·05.