Fig. 1

Representative sample of vessel densities in the macula region and RNFL thickness of optic disc for each group (control, NDR, mild NPDR) .green arrow indict FAZ, red arrow indict FD-300, Top row: the size and shape of FAZ, FD-300; Second row: VD of the superficial retinal vascular layer in macular area; Third row: VD of the deep retinal vascular layer in macular area; Bottom row: RNFL thickness in optic disc