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. 2019 Dec 13;9:19056. doi: 10.1038/s41598-019-55544-6

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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 images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Mean best-corrected visual acuity (BCVA) in the patients with axial length (AL) < and ≥23.6 mm. Mann-Whitney U test was performed for comparing mean BCVA at each time point between the groups. In patients with AL <23.6 mm, the mean BCVAs were significantly worse at 1 week and 1- and 3-months postoperatively. Generalized mixed model analysis was performed for comparing the preoperative data with the 1-week and 1- and 3-month postoperative data. BCVA improved at 1 week after surgery in patients with AL ≥23.6 mm, while it was better than the preoperative value at 1 and 3 months after surgery in both groups. Data are shown as mean ± standard error. *P < 0.05, **P < 0.01 for comparisons between the groups. ^††P < 0.01 for comparisons between preoperative and postoperative values at each time point.