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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. 4 — Corneal topographic changes according to chalazia size. Chalazia are classified into control, small-, medium- or large-sized groups. Astigmatism by simulated keratometry (simK; a), second order aberration (b), oblique astigmatism (Z^-2 ₂; c), and vertical astigmatism (Z² ₂; d) are significantly greater in the large-sized chalazion group (p = 0.037, 0.036, 0.006, and 0.002, respectively; one-way analysis of variance)