Retrobulbar haemodynamics and carotid wall thickness in patients with non-arteritic anterior ischaemic optic neuropathy
- 1Eye Research Center and Eye Department, Rassoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
- 2Department of Neurology, Rassoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
- 3Eye Research Center, Rassoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
- Dr K Ghasemi Falavarjani, Eye Research Center, Rassoul Akram Hospital, Sattarkhan-Niayesh Street, Tehran 14455-364, Iran; drghasemi{at}yahoo.com
- Accepted 5 December 2008
- Published Online First 19 December 2008
Abstract
Aim: To compare retrobulbar haemodynamics and ipsilateral carotid wall thickness of patients with unilateral non-arteritic anterior ischaemic optic neuropathy (NAION) with their contralateral side.
Methods: Seventeen patients with unilateral NAION participated in this study. By means of Colour Doppler imaging, the blood-flow velocities of the ophthalmic artery were measured. Intima-media thickness (IMT) of common carotid and internal carotid arteries were measured using B-mode ultrasonography. Measurements of the affected side were compared with the non-involved side.
Results: Flow velocities in the ophthalmic arteries on the side of the eyes with NAION were significantly decreased compared with those on the side of the unaffected eyes (p<0.001). In addition, in all patients, both common and internal carotid artery IMT were significantly greater on the side of the NAION compared with the contralateral side (p<0.001).
Conclusion: NAION may be associated with decreased retrobulbar flow velocities and increased carotid wall thickness.
Footnotes
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Competing interests: None.
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Ethics approval: Ethics approval was provided by the Institutional Review Board of the Eye Research Center, Iran University of Medical Sciences.
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Patient consent: Obtained.







