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. 2019 Jun 6;17:98. doi: 10.1186/s12955-019-1158-1

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© The Author(s). 2019

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. 2 — Distribution of NEI VFQ-25 socioemotional scale scores by categories of vision impairment (by better-seeing eye and worse-seeing eye) of the German population-based Gutenberg Health Study (GHS), 2007–2012. b: better-seeing eye; w: worse-seeing eye; 0: no vision impairment (< 0.32 logMAR), 1: mild vision impairment (0.32–0.5 logMAR); 2: moderate/severe vision impairment (> 0.5 logMAR); gray boxes: interquartile range (IQR); black line: median; black square: mean; whiskers: lowest data point still within 1.5 (IQR) of the lower quartile, and the highest data point still within 1.5 IQR of the upper quartile; dots: outliers