Quantification of Microvascular Density of the Optic Nerve Head in Diabetic Retinopathy Using Optical Coherence Tomographic Angiography

Figure 1

Radial peripapillary capillary (RPC) density measurement on OCTA. (a) Angiographic image of the 4.5  4.5 rectangle scan of the ONH. The inside optic disc area is the area surrounded by the inner blue circle; the peripapillary region area is between the two blue rings; (b) vessel density showed by the colour maps. The different numbers of the outer ring represent the capillary density of the peripapillary area.

(a)

(b)