Pure alexia and right hemiachromatopsia in posterior dementia.
case_report · Level V
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- Record sourced from PubMed, PMID 1619420.
- Also identified by PMC identifier 1014909.
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Abstract
A 66 year old, right handed woman presented with pure alexia and right hemiachromatopsia (PARH) in the context of a posterior dementia. PARH was accompanied by prosopagnosia, 2-D object agnosia, and environmental agnosia. Visual fields were normal to confrontation testing. The pathological anatomy of PARH involves circumscribed damage to the lingual and fusiform gyri and paraventricular white matter of the left occipital cortex, two contiguous cortical regions functionally specialised for processing colour and word form information, respectively.
Medical subject headings
- Color Vision Defects
- Dementia
- Dyslexia, Acquired