Prolonged use of the following drug has been implicated in the causation of suacute myelo-optic neuropathy (SMON):: (A) Diloxanide furoate, (B) Quiniodochlor, (C) Emetine, (D) Furazolidone
Answer is B. (Ref: KDT 6/e p802) 8-hydroxyquinolones like quiniodochlor can result in SMON.