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Vision and visual processing deficits 

Vision and visual processing deficits
Chapter:
Vision and visual processing deficits
Author(s):

Anna Katharina Schaadt

and Georg Kerkhoff

DOI:
10.1093/med/9780199655946.003.0014
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date: 07 June 2020

Up to half of all patients with acquired brain damage due to vascular or traumatic origin show central visual processing deficits. Cerebral visual impairments are also a frequent, even cardinal symptom in several neurodegenerative conditions like Alzheimer’s disease or posterior cortical atrophy. This chapter provides a short introduction to the clinical relevance, describing a routine screening procedure for assessment of visual processing deficits. The most clinically relevant visual processing disorders are described, ranging from low-level impairments to higher level impairments. In addition, other conditions like visual discomfort and positive visual phenomena (visual hallucinations) are covered as well as complex disorders affecting modalities in addition to vision: optic ataxia and Bálint–Holmes syndrome. For each disorder, detailed aetiological and diagnostical information is given first before effective therapeutical approaches are described.

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