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. 2017 Aug 1;102(3):383–387. doi: 10.1136/bjophthalmol-2017-310576

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Retinal oxygen saturation. Oxymap T1 image showing traced vessels with overlaying colour map indicating oxygen saturation by colour on right eye. The oxygen saturation is measured in traced vessels, seen as white lines on either side of the vessels, between the blue rings. Retinal vessels covered in white areas are excluded vessel segments.