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

Table 2 Comparison of diameter, Vm, blood flow volume of OA/ICA and vessel density between the affected and the contralateral healthy side in the patients with NAION

Groups	NAION eye	Normal eye	P
OA diameter (mm)	1.39 ± 0.12	1.41 ± 0.14	0.054***
OA Vm (cm/s)	11.56 ± 2.77	12.17 ± 2.75	0.083***
OA blood flow volume (mm³/s)	176.96 ± 56.67	193.00 ± 61.04	0.015***
ICA diameter (mm)	2.90 ± 0.72	3.18 ± 0.50	0.001***
ICA Vm (cm/s)	46.04 ± 5.83	45.97 ± 5.52	0.938***
ICA blood flow volume (mm³/s)	3097.75 ± 1131.55	3691.07 ± 1076.24	< 0.001***
Peripapillary vessel density (% area)	48.90 ± 6.02	56.33 ± 2.58	0.001***
Optic disc vessel density (% area)	45.77 ± 4.91	54.75 ± 2.39	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