Efficacy of Dalfampridine on visual function (contrast sensitivity). 8 weeks [clinicaltrials_resource:48dd07a3a9de7c4ce0fa022c2389a8fa]

Dalfampridine treatment will improve visual function, measured by the 5% ETDRS contrast sensitivity chart, in subjects with long-term visual impairment secondary to optic neuritis from MS.

Efficacy of Dalfampridine on visual function (contrast sensitivity). 8 weeks [clinicaltrials_resource:48dd07a3a9de7c4ce0fa022c2389a8fa]

Dalfampridine treatment will improve visual function, measured by the 5% ETDRS contrast sensitivity chart, in subjects with long-term visual impairment secondary to optic neuritis from MS.