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Celia S. Chen, MBBS, MPH; Phillipe Gailloud, MD; Neil R. Miller, MD

Arch Ophthalmol. 2008;126(2):274-276.

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

Optic chiasmal syndrome can be caused by a variety of lesions, including tumors and carotid artery aneurysms¹; however, reports of bitemporal field loss from compression by an abnormal vessel are rare.² We describe a patient with a nonprogressive bitemporal hemianopia in whom there appeared to be compression of the optic chiasm by an elongated right anterior cerebral artery (ACA).

Report of a Case

A bitemporal hemianopia was found in a 65-year-old woman with no vascular risk factors during a routine eye examination in 2003. Magnetic resonance imaging (MRI) results were normal. One year later, the bitemporal field defect was still present and a second MRI again showed no evidence of a compressive or infiltrative process.

The patient was subsequently referred to us for an assessment. On examination, her visual acuity was 20/20 OU with normal color vision and pupillary responses. The . . . [Full Text of this Article]

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