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. 2020 Mar 27;10:5608. doi: 10.1038/s41598-020-62633-4

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© The Author(s) 2020

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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Images from the left eye of an individual with primary angle-closure glaucoma. (a) The optic disc photography shows characteristic glaucomatous changes. (b) The visual field test shows a superior arcuate defect with a mean deviation of −3.33 decibels. (c) The optical coherence tomography angiography (RTVue XR with AngioVue; version 2018.0.0.14; URL: http://www.optovue.com) shows a generalised reduction of peripapillary vessel densities. (d) The Cirrus optical coherence tomography shows retinal nerve fibre layer thinning corresponding to visual field defects.