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Published on: November 12, 2020
Contrast-induced transient cortical blindness
Parth R Shah1, Jayshan Yohendran, Geoffrey D Parker
1Royal Prince Alfred Hospital, Camperdown, Australia. parth13786@yahoo.com.au
Abstract:
We present a case of transient cortical blindness secondary to contrast medium toxicity. A 58-year-old man had successful endovascular coiling of a right posterior inferior cerebellar artery aneurysm but became confused and unable to see after the procedure. His visual acuity was no light perception bilaterally. Clinically, there was no new intra-ocular pathology. An urgent non-contrast computed tomography scan of the brain showed cortical hyperdensity in both parieto-occipital cortices, consistent with contrast medium leakage through the blood-brain barrier from the coiling procedure. The man remained completely blind for 72 hours, after which his visual acuity improved gradually back to his baseline level.
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