Efficacy of Dalfampridine on visual function (contrast sensitivity). 8 weeks [clinicaltrials_resource:a8fb691e2fc6ba18db0673ae93c6ff13]

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:a8fb691e2fc6ba18db0673ae93c6ff13]

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.