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. 2022 Apr 22;54(1):1089–1111. doi: 10.1080/07853890.2022.2064541

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© 2022 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 1. — Angiographic findings in different stages of diabetic retinopathy. (A) Mild form of NPDR characterised by preserved posterior pole and minor capillary non-perfusion changes detected in the extreme periphery. (B) Advanced form of NPDR, showing extensive peripheral capillary non-perfusion and central involvement with several microaneurysms and macular edoema. (C) A case of PDR with extensive peripheral capillary non-perfusion and neovascularizations detected both at the level of the optic nerve head and the retinal periphery. (D) Optical coherence tomography angiography reconstruction of a PDR-related neovascularization.