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May 1987

Unusual Visual Phenomenon During Acephalgic Migraine

Arch Ophthalmol. 1987;105(5):613. doi:10.1001/archopht.1987.01060050031017

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To the Editor.  —Recently, during an episode of acephalgic migraine, I experienced an unusual visual phenomenon. I noted the onset of my typical hemianopic scintillating scotoma in the paracentral area in my left homonymous field. This scotoma gradually enlarged over a period of five minutes. I began to notice that within the area of these zigzag scintillations, images were doubled. Even more interestingly, when I covered either eye, the images remained doubled within the scintillating scotoma. The doubling of images did not change during monocular or binocular viewing.I am uncertain as to the cause of this phenomenon and am interested to know if anyone else has experienced a similar phenomenon or if their patients have noted this unusual diplopia within the area of scintillation.

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