We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleVisual signs and symptoms of Parkinson's disease.AuthorsArmstrong, Richard A.PublicationClinical & Experimental Optometry, 2008, Vol 91, Issue 2, p129ISSN0816-4622Publication typearticleDOI10.1111/j.1444-0938.2007.00211.x