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Abstract #6155 Published in IGR 2-2
Anterior ischaemic optic neuropathy associated with central retinal vein occlusion
Ab El-Asrar AM; Al Rashaed SA; Abdel Gader AGMEye 2000; 14: 560-562
PURPOSE: To report the unusual association between non-arteritic anterior ischemic optic neuropathy (NAION) and non-ischemic central retinal vein occlusion (CRVO) in two patients. METHODS: Case reports are presented. RESULTS: Non-ischemic CRVO was manifested by dilated, tortuous retinal veins with flame-shaped retinal hemorrhages. Fluorescein angiography showed prolonged arteriovenous transit time and normal retinal capillary perfusion without macular edema. The presence of color vision abnormalities, relative afferent pupillary defects, pale disc swelling and visual field deficits indicated that the visual loss was attributable entirely to NAION. Laboratory investigations disclosed impaired fibrinolytic function in case 1 and the presence of antiphospholipid antibodies in case 2. CONCLUSIONS: Compression of the central retinal vein by the swollen optic nerve could have predisposed to CRVO. The presence of thrombophilic abnormalities may have contributed to the concomitant occlusion of posterior ciliary arteries and central retinal vein. Ischemic optic neuropathy needs to be considered in patients with CRVO when the visual acuity is not consistent with the retinal pathology.
Dr. Ahmed M. Abu El.Asrar, Department of Ophthalmology, King Abdulaziz University Hospital, Airport Road, P.O. Box 245, Riyadh 11411, Saudi Arabia. Abuasrar@KSU.edu.sa
Classification:
10 Differential diagnosis e.g. anterior and posterior ischemic optic neuropathy
