Sudden loss of vision (443/1700)

A 38yo female presents with sudden loss of vision but fundoscopy is normal. She a similar
episode about 1 year ago which resolved completely within 3m. Exam: mild weakness of right
upper limb and exaggerated reflexes. What is the single most appropriate tx?

a. Pan retinal photo coagulation
b. Pilocarpine eye drops
c. Corticosteroids
d. Peripheral iridectomy
e. Surgical extraction of lens

answer: C
Multiple sclerosis, relapsing remitting type