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. Author manuscript; available in PMC: 2023 May 1.
Published in final edited form as: Ophthalmol Glaucoma. 2021 Oct 18;5(3):250–261. doi: 10.1016/j.ogla.2021.10.005

Figure 2: Selection of assessed regions of interest.

Figure 2:

(A) To analyze flow-based metrics from the region of the optic nerve heard, three regions were selected: entire optic disc within the circular ROI, major blood vessels overlying the optic disc (disc vessels) delineated by the piecewise linear polygonal region, and the region of the optic disc not included within disc vessels (disc perfusion). (B) To analyze flow-based metrics from the foveal region, a fixed diameter region overlaying the fovea was selected.