Contralateral visual field loss with alexia without agraphia and potential bilateral cortical blindness (Anton syndrome) is associated with infarction of which artery?

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The posterior cerebral artery supplies the occipital lobes where the primary visual cortex and the visual word form area reside. A stroke in this territory can produce contralateral visual field deficits (homonymous hemianopia) and, if the language-dominant occipital region is affected, alexia without agraphia due to disruption of connections between the visual word form area and language cortex via the splenium. When the infarct is bilateral or extensive, the patient can develop cortical blindness with denial of the deficit (Anton syndrome). The other arteries would produce different patterns (basilar brainstem signs, MCA-dominant aphasia with face/arm weakness, or ACA-related leg-dominant symptoms). Thus, posterior cerebral artery infarction best accounts for the described constellation.