Table 1.

Quantitative analysis of a normal case and a NPDR case.

Indices	VDI	VAD	VSD	VPI	VCI	Flow impairment zone (${\mathrm{mm}}^2$)
Normal	24.421	0.518	0.146	0.349	17838.540	0.264
DR	24.665	0.370	0.101	0.245	12954.770	3.450