June 18, 2020 Columns by Tamara Sellman Need to Know: What Is Nystagmus and How Does It Affect MS Patients? Editor’s note: “Need to Know” is a series inspired by common forum questions and comments from readers. Have a comment or question about MS? Visit our forum. This week’s question is inspired by the forum post, “Do you have eye issues due to MS?,” published Oct. 28, 2018.