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. 2015 Apr 10;15:37. doi: 10.1186/s12886-015-0026-y

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© Hikichi; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. 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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Improvement in the logarithm of the minimum angle of resolution (logMAR) visual acuity (VA) at the end of the third year in each treatment schedule. The white and shaded bars indicate the changes from baseline and the 2-year values, respectively. The positive values on the Y-axis indicate VA improvements at the end of the third year compared to baseline or 2 years. PRN = pro re nata. *P = 0.01; †P = 0.04; ‡P = 0.02.