Visual perceptual functions predict instrumental activities of daily living in patients with dementia.

Objective: To assess relations between discrete visual perceptual functions commonly affected in patients with neurodegenerative dementia and the performance of instrumental activities of daily living (IADL).

Background: Neuropsychologic measures are often used to predict IADL performances in dementia patients. Prior studies have focused on the contribution of higher-level memory and executive deficits to IADL.