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. 2017 Mar 31;17:36. doi: 10.1186/s12886-017-0426-2

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© The Author(s). 2017

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. 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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Fig. 3 — Corneal topographic changes according to the chalazion location. Chalazia are classified into control, nasal, middle, temporal, or whole area group. Astigmatism by auto-refractokeratometer (a), oblique astigmatism (Z⁻² ₂; b), defocus (Z⁰ ₂; c), and secondary oblique astigmatism (Z⁻² ₄; d) are significantly different between groups (p = 0.046, 0.033, 0.003, and 0.015, respectively, one-way analysis of variance)