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. 2018 Dec 20;18:334. doi: 10.1186/s12886-018-0998-5

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© The Author(s). 2018

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 — Changes in central corneal thickness. Total corneal thickness at the corneal apex is 549.1 ± 32.7 μm before surgery and increases to 582.7 ± 46.3 μm on day 1 after surgery (P = 0.001 vs. preoperative). Corneal thickness recovers to 566.4 ± 29.7 μm on day 3 (P = 0.097 vs. preoperative) and 559.4 ± 32.4 μm on day 7 (P = 0.400 vs. preoperative) after surgery