Research on Association of the Diameter of the Internal Carotid Artery Siphon and Nonarteritic Anterior Ischaemic Optic Neuropathy

Table 5

Hemodynamic parameters of the SPCAs.

	PSV (cm/s)	EDV (cm/s)	RI
Observation group	10.72 ± 2.88	3.43 ± 1.01	0.68 ± 0.06
Control group	13.62 ± 3.93	4.59 ± 1.71	0.65 ± 0.07
t value	4.221	4.223	−1.474
Value	<0.001	<0.001	0.151

SPCAs: short posterior ciliary arteries; PSV :  peak systolic velocity; EDV: end diastolic velocity; RI: resistance index. values were calculated using the paired t-test.