The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Which of these anticonvulsants causes contraction of visual field?   (A) Levetiracetam   (B) Phenytoin   (C) Vigabatrin   (D) Ethosuximide
['(C) Vigabatrin <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Levetiracetam \n (B) Phenytoin \n (C) Vigabatrin \n (D) Ethosuximide <> possible answers', '  Which of these anticonvulsants causes contraction of visual field? <> context@']