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. 2020 Nov 13;41(3):805–813. doi: 10.1007/s10792-020-01633-9

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© The Author(s) 2020

Open AccessThis 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — Comparison of the cross-sectional optical coherence tomography (OCT) images (left) and optical coherence tomography angiography (OCTA) images of the superficial (middle) and deep (right) capillary plexuses from all eight eyes. The thickness of the foveal inner retinal layer (fIRL) and parafoveal inner retinal layer (pIRL), in addition to the area of the foveal avascular zone (FAZ), were all measured manually. Subsequently, fIRL/pIRL ratio was calculated and the size of FAZ area was corrected by axial length