Pupils alternatively contract and dilate known as hippus sign, is seen in
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
Arsenic poisoning
Aconite poisoning
Atropine poisoning
Albinoria
Poisoning