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Bilateral simultaneous inferior altitudinal hemianopia due to ischemic optic neuropathy

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Abstract

A sixty-year-old patient developed a bilateral symmetrical inferior altitudinal hemianopia in the span of an hour.

The ophthalmoscopic and fluorescein angiographic findings were typical of anterior ischemic optic neuropathy (AION). This disease usually begins in one eye and as rule involves the fellow eye after an interval of days or years. Simultaneous bilateral onset of AION in a patient is very rare although not unknown. This case suggests that symmetrical and simultaneous bilateral defects of visual fields may be due to a prechiasmal lesion of the visual pathways.

Sommario

Vierte descritto il caso di un paziente di 60 anni che presentò improvvisamente una emianopsia altitudinale inferiore, bilaterale, omonima e perfettamente simmetrica. I reperti oftalmoscopici e fluoroangiografici erano tipici per una diagnosi di neuropatia ottica ischemica anteriore. Tale malattia di solito inizia in un occhio e tende tipicamente al coinvolgimento dell'altro occhio in un 'elevata percentuale di casi con un intervallo variabile (da alcuni giorni ad alcuni anni). Un'insorgenza bilaterale e simultanea, come nel caso qui riportato è un evento eccezionalmente raro, soprattutto se si considera la simmetricità dei difetti campimetrici che avrebbe potuto suggerire una localizzazione post-chiasmatica della lesione.

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Blundo, C., Corsi, F.M., Di Battista, G. et al. Bilateral simultaneous inferior altitudinal hemianopia due to ischemic optic neuropathy. Ital J Neuro Sci 3, 65–69 (1982). https://doi.org/10.1007/BF02043349

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