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. Author manuscript; available in PMC: 2020 Dec 1.
Published in final edited form as: Ophthalmol Retina. 2019 Aug 7;3(12):1035–1044. doi: 10.1016/j.oret.2019.07.016

Figure 3: Data extraction from co-registered FAF, NIR-R and SD-OCT scans.

Figure 3:

A. FAF grayscale image. The border of a manually selected region of interest (ROI) is drawn around the GA lobules. The image itself has been rotated and co-registered with the NIR-R image, C. Note the myriad matching SDD in the FAF and NIR-R images, with more seen in the NIR-R image. B. The FAF ROI was analyzed and color-coded by dividing the FAF gray levels into quartiles (color bar) after excluding the highest and lowest 2.5% of values (white and black on color bar, respectively). C. The AF ROI outline (red) was superimposed onto the co-registered NIR-R image. The SD-OCT scans (not shown) are all automatically registered to the NIR-R image at acquisition. Dashed red lines indicate the locations of the registered B-scan segments from which thickness measurements of the retinal layers and choroid were obtained, and the points from which the FAF quartile values were extracted from B.