1 results match your criteria: "Department of Neurology Mayo Clinic College of Medicine Scottsdale Arizona USA.[Affiliation]"
Background: Abnormal color vision and contrast acuity may have significant impact on daily activities.
Objective: Evaluate color visual acuity, at high and low contrast, in Parkinson's disease (PD) and controls using an iPad application.
Methods: Color visual acuity was tested with the Variable Contrast Acuity Chart (King-Devick Test LLC, Oakbrook Terrace, IL) on an iPad 2 at 40 cms using five colors (red, green, blue, yellow, and black) at low (2.