RT Journal Article SR Electronic T1 The ocular manifestations of multiple sclerosis. 1. Abnormalities of the afferent visual system. JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 747 OP 752 DO 10.1136/jnnp.55.9.747 VO 55 IS 9 A1 W I McDonald A1 D Barnes YR 1992 UL http://jnnp.bmj.com/content/55/9/747.abstract AB