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Fig. 3 | BMC Ophthalmology

Fig. 3

From: Correlation between optic nerve head circulation and visual function before and after anti-VEGF therapy for central retinal vein occlusion: prospective, interventional case series

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)

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BMC Ophthalmology

ISSN: 1471-2415

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