[Disorders of visual perception].

Disorders of visual perception are frequent and disabling functional consequences of acquired brain injury (20-40%). They also have adverse effects on the assessment, diagnosis and treatment of other functional disorders. Most frequent are visual field disorders followed by disorders of visual acuity and contrast sensitivity, visual adaptation, color and visual space perception as well as of visual recognition. Multiple visual and/or additional cognitive disorders are most common. The differential diagnosis of cerebral visual disorders and an individually tailored and specific approach in the rehabilitation are therefore of great importance. Compensatory treatment methods are to be preferred because of their efficacy, ecological validity as well as a good cost-benefit ratio.