Compressive Optic Neuropathy from the Normal and Abnormal Internal Carotid Artery

Neurographics ◽  
2018 ◽  
Vol 8 (2) ◽  
pp. 79-85
Author(s):  
R.C. Chen ◽  
S.W. Kheok ◽  
P. Salkade ◽  
L.L. Chan ◽  
G. Choy ◽  
...  
Keyword(s):  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Optic Neuropathy ◽  
Internal Carotid ◽  
Compressive Optic Neuropathy

scholarly journals Internal carotid artery velocities in patients with unilateral non-arteritic anterior ischemic optic neuropathy

2017 ◽  
Vol 15 (3) ◽  
Author(s):  
Karen Bulan Reyes
Keyword(s):  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Optic Neuropathy ◽  
Internal Carotid ◽  
Peak Systolic Velocity ◽  
Contralateral Side ◽  
Anterior Ischemic Optic Neuropathy ◽  
Ischemic Optic Neuropathy ◽  
Significant Difference ◽  
Control Study

Objective: This study aims to evaluate and compare the proximal, medial, and distal segments of internal carotid artery (ICA) peak systolic velocities (PSV) in patients with nonarteritic anterior ischemic optic neuropathy (NA-AION) in one eye against the contralateral side with normal eye findings using doppler ultrasound. Methods:  This is a single-center,  prospective, case control study of five patients with unilateral NA-AION.  The peak systolic velocity (PSV) of the proximal, medial, and distal segments of the ICAs on both sides, one side with NA-AION while the contralateral side had normal eye findings, were compared and analyzed. Results: Four females and one male with a mean age of 59 years (SD = 17 years) were included. PSV of the ICA was measured in three segments: Proximal (PICA), Medial (MICA), and Distal (DICA). Mean PSV of eyes with NA-AION was 143cm/sec (SD= 177cm/sec), 159 cm/sec (SD=189 cm/sec), 98 cm/sec (SD=34cm/sec) for PICA, MICA and DICA respectively. Mean PSV of contralateral side without NA-AION was 95cm/sec (SD= 72cm/sec), 101 cm/sec (SD=53cm/sec), 140cm/sec (SD=60 cm/sec) for PICA, MICA and DICA respectively. There was no statistically significant difference between the two groups along the three segments (T-test PICAp=0.369, MICAp=0.402, DICAp=0.112). Conclusion: Mean PSV was higher in eyes with NA-AION at the proximal and medial segments of the ICA, while it was lower at the distal segments compared to the contralateral non-NA-AION side. 

scholarly journals Ischemic Optic Neuropathy Associated With Internal Carotid Artery Dissection

1998 ◽  
Vol 55 (5) ◽  
pp. 715 ◽  
Author(s):  
Valérie Biousse ◽  
Monique Schaison ◽  
Pierre-Jean Touboul ◽  
Jacques D'Anglejan-Chatillon ◽  
Marie-Germaine Bousser
Keyword(s):  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Optic Neuropathy ◽  
Internal Carotid ◽  
Carotid Artery Dissection ◽  
Artery Dissection ◽  
Ischemic Optic Neuropathy ◽  
Internal Carotid Artery Dissection

Internal carotid artery hypoplasia presenting as anterior ischemic optic neuropathy

2001 ◽  
Vol 131 (5) ◽  
pp. 673-674 ◽  
Author(s):  
Josepha Horowitz ◽  
Alina Melamud ◽  
Lea Sela ◽  
Yair Hod ◽  
Orna Geyer
Keyword(s):  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Optic Neuropathy ◽  
Internal Carotid ◽  
Anterior Ischemic Optic Neuropathy ◽  
Ischemic Optic Neuropathy

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

2019 ◽  
Vol 2019 ◽  
pp. 1-7
Author(s):  
Zhiyong Fu ◽  
Hongyang Li ◽  
Wei Wang ◽  
Yanling Wang
Keyword(s):  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Optic Neuropathy ◽  
Internal Carotid ◽  
Resistance Index ◽  
Control Group ◽  
Observation Group ◽  
Significant Difference ◽  
Ischaemic Optic Neuropathy ◽  
Anterior Ischaemic Optic Neuropathy

Objective. To investigate the association of the diameter of the internal carotid artery siphon (ICAS) and nonarteritic anterior ischaemic optic neuropathy (NAION). Methods. Thirty patients clinically diagnosed with NAION (unilateral affected) who presented to Beijing Friendship Hospital from January 2017 to October 2018 were selected. The eyes suffered from NAION were enrolled as the observation group, and the fellow healthy eyes were enrolled as the control group. The following indexes were measured: diameter of the ICAS and the ophthalmic artery (OA), intima-media thickness (IMT) of the internal carotid artery (ICA), degree of stenosis of the ICA and plaque formation, and hemodynamic parameters of the ICA and the short posterior ciliary arteries (SPCAs). All the values were compared between the two groups. Results. The diameter of the ICAS in the observation group (0.30 ± 0.07 cm) significantly narrowed compared with that of the control group (0.32 ± 0.06 cm) (P<0.05), but the diameter of the OA of the two groups had no significant difference. The detection rate of carotid atherosclerosis plaque, the average blood flow velocity (Vm), and the resistance index (RI) of the ICA in the observation group (46.67%, 26.81 ± 1.78 cm/s, and 0.72 ± 0.06) had significant differences compared with those of the control group (16.67%, 28.19 ± 2.75 cm/s, and 0.70 ± 0.05) (P<0.05), but the gradings of ICA stenosis and IMT between the two groups had no significant differences. The peak systolic velocity (PSV) and the end diastolic velocity (EDV) of the SPCAs in the observation group (10.72 ± 2.88 cm/s and 3.43 ± 1.01 cm/s) were significantly lower than those of the control group (13.62 ± 3.93 cm/s and 4.59 ± 1.71 cm/s) (P<0.05), but the RI of the SPCAs of the two groups had no significant differences. Conclusion. The diameter of the ICAS has a close relationship with NAION.

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