Low contrast visual acuity testing is associated with cognitive performance in multiple sclerosis: a cross-sectional pilot study. Wieder L, Gäde G, Pech LM, Zimmermann H, Wernecke K-D, Dörr J-M, Bellmann-Strobl J, Paul F, Brandt AU BMC Neurol. 2013 Nov 8; 13(1):167. Epub 2013 Nov 08. PMID: 24206900. Abstract CommentRecommendBookmarkWatch