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  • Title: Isolated bilateral blindness as the sole manifestation of transient ischaemic attacks.
    Author: Krasnianski M, Bau V, Neudecker S, Lindner A, Zierz S.
    Journal: Acta Ophthalmol Scand; 2006 Jun; 84(3):415-8. PubMed ID: 16704710.
    Abstract:
    PURPOSE: To explain the rare phenomenon of acute transient bilateral blindness without additional ophthalmological or neurological symptoms and signs. METHODS: Six patients with isolated bilateral visual loss lasting 1-15 mins and occurring simultaneously in both eyes were evaluated. Clinical observation, neuroimaging (CT, MRI, MR-angiography), extra- and transcranial Doppler and vascular risk factors assessment were performed. RESULTS: Cortical blindness due to bilateral occipital lobe transient ischaemic attacks (TIAs) was established as the most likely cause of acute transient visual loss in all patients. CONCLUSION: We suggest that in cases of transient bilateral blindness with sudden onset, appearing simultaneously in both visual fields, a bilateral ischaemia of the visual cortex should be suspected even if other neurological symptoms are lacking. Patients should be managed in the same way as patients with vertebrobasilar TIAs.
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