Implication of Retrobulbar and internal carotid artery blood-flow-volume alterations for the pathogenesis of non-arteritic anterior ischemic optic neuropathy

Table 3 Comparison of diameter, Vm, blood flow volume of OA/ICA and vessel density between the affected side of the patients with NAION and the controls

Groups	NAION eye	Controls	P
OA diameter (mm)	1.39 ± 0.12	1.43 ± 0.15	0.179*
OA Vm (cm/s)	11.56 ± 2.77	12.52 ± 1.45	0.052*
OA blood flow volume (mm³/s)	176.96 ± 56.67	200.79 ± 41.65	0.031*
ICA diameter (mm)	2.90 ± 0.72	3.36 ± 0.51	0.001*
ICA Vm (cm/s)	46.04 ± 5.83	47.03 ± 3.92	0.364*
ICA blood flow volume (mm³/s)	3097.75 ± 1131.55	4196.79 ± 1095.75	< 0.001*
Peripapillary vessel density (% area)	48.90 ± 6.02	57.08 ± 3.02	0.001*
Optic disc vessel density (% area)	45.77 ± 4.91	55.51 ± 2.72	0.001*

Independent-samples t-test *, χ2 test **, Paired- samples t-test ***
NAION non-arteritic anterior ischemic optic neuropathy, OA ophthalmic artery, Vm mean blood flow velocity, ICA internal carotid artery

ISSN: 1471-2415