Fig. 1. OCT structures. (a) Time domain OCT; (b) frequency domain OCT

Fig. 2. Flow chart of SSADA algorithm ^[23]. (a) Schematic of band-pass filtering to reduce spectrum width; (b) schematic of using SSADA to improve average signal to noise ratio

Fig. 3. Flow chart of OMAG algorithm

Fig. 4. Fundus blood vessel OCTA images^[33]. (a) Superficial blood vessel; (b) choroid capillary plexus; (c) deep capillary plexus

Fig. 5. Retinal angiography images of diabetic patients^[37]. (a) Superficial FAZ of an eye; (b) deep FAZ of an eye

Fig. 6. Normal and abnormal retinal images^[38]. (a) Normal retinal; (b) retinal vein occlusion

Fig. 7. OCTA images of RAO^[40-41]. (a) Superfcial retinal capillary plexus of CRAO; (b) deep retinal capillary plexus of CRAO; (c) superfcial retinal capillary plexus of BRAO; (d) deep retinal capillary plexus of BRAO

Fig. 8. OCTA images of disease progression in patient with MacTel2^[47]. (a) OCTA at the level of the outer retina and choriocapillaris shows subretinal neovascularization; (b) OCTA demonstrates microvascular abnormalities in the deep capillary plexus of the retina

Fig. 9. Choroid en face radiography of a CNV Ⅲ patient^[49]. (a) Outer retina shows part of the CNV centrally; (b) deep capillary plexus showing dilated CNV vessel

Fig. 10. OCTA angiograms of AMD patient^[49]. (a) OCTA drusen perfusion dark area; (b) angiogram of the choriocapillaris