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. 2021 Sep 8;11:17828. doi: 10.1038/s41598-021-96877-5

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© The Author(s) 2021

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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Blood flow reversal in the central retinal artery in a case of high tension glaucoma/CRVO. (a) Averaged blood flow image. (b) Systolodiastolic image. (c) Color composite Doppler image of low/high flow in red/cyan. (d) ICG-Angiogram. (e,f) Directional blood flow during systole and diastole. (g) Blood flow measured in an in-plane artery ‘A’ and vein ‘V’. (h) Spectrogram measured in ‘CRA’. Visualization 3 shows the directional blood flow movie juxtaposed to the arterial spectrogram. Visualization 4 shows the dynamic ICG-angiography. The estimated size of the scale bar is 500 $μ$ m.