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Figure 1

From: Parapapillary choroidal microvasculature dropout in eyes with primary open-angle glaucoma

Figure 1

Manual measurement and computation of microvasculature dropout. Optical coherence tomography angiography (OCTA) was performed using HD-OCT (Cirrus HD-OCT5000 with AngioPlex OCT Angiography). Optic nerve angiography images were obtained using a 4.5 mm × 4.5 mm scan pattern. Images with signal strength index (an index of image reliability) ≤ 50 were excluded. Microvasculature dropout (MvD) area was identified manually using ImageJ analysis software (yellow line).

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