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. 2016 Dec 8;16:215. doi: 10.1186/s12886-016-0386-y

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© The Author(s). 2016

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. 5 — Near and distance visual acuity in 8–13 year olds with normal vision. As can be seen in this Figure, there was quite some variation in outcome. This variation can be due to differences in population characteristics across studies. Note that in the Larsson study, distance letter acuity was 0.11 logMAR poorer for letters than symbols. RA = reading acuity measured with the Italian version of MNREAD chart, ETDRS = ETDRS chart, LEA = Lea symbols, J = Jaeger chart, Log = LogMAR chart (type not specified). Error bars ± 1 sem