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. 2018 Aug 23;18:208. doi: 10.1186/s12886-018-0885-0

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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. 1 — Conjunctival and corneal calcification. a In patient A, who had a 7-year HD history, a gray, line-shaped calcium deposit could be seen on the cornea. b In patient B, who had a 3-year HD history, white dot- and line-shaped calcium deposits were observed at the limbus. c In patient C, who had a 6-year HD history, white, block-shaped conjunctival calcium deposits were observed