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. 2016 Apr 5;16:36. doi: 10.1186/s12886-016-0211-7

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© Nagasato et al. 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. 3 — Composite maps and histograms at the optic nerve head (ONH) created by laser speckle flowgraphy. a: A false-color composite map at the ONH. b: A histogramic analysis of the ONH. The vertical axis represents the number of pixels and the horizontal axis represents the mean blur rate. c: A binary format image for segmentation between the vessel (white area) and tissue (black area) areas. d: A histogram analyzed using the built-in image viewer software that uses an automated definitive threshold. The area to the left of the threshold line corresponds to the ONH tissue (black area in c), whereas the area to the right of the line corresponds to the ONH vessel (white area in c)