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. 2014 May 15;14:66. doi: 10.1186/1471-2415-14-66

Figure 2.

Figure 2

Grading example of spectral domain optical coherence tomography based feature. A. Infrared reflectance image with 22 vessels labeled. B. Optical coherence tomography circular scan centred at the optic disc. Retinal arteries (red arrows) and retinal veins (white arrows) were correctly classified based on the lower border reflectivity feature. Vessel No. 5 was classified incorrectly. Note: The image for each vessel is preferably assessed without magnification.