Pupils alternatively contract and dilate known as hippus sign, is seen in: (A) Arsenic poisoning, (B) Aconite poisoning, (C) Atropine poisoning, (D) Albinoria
Answer is B. Aconite poisoning occular: pupils show alternate constriction and dilatation. This is called hippus. In later stages, pupils will become widely dilated with dimness of vision and dipolopia. Ref: FORENSIC MEDICINE AND TOXICOLOGY Dr PC IGNATIUS THIRD EDITION PAGE 470