<prompt> Pin point pupils are seen in all except ?Pontine hemorrhageOrganophosphorus poisoningOpium poisoningBarbiturate poisoning  <response>: Ans. is d i.e., Barbiturate poisoning Pin point pupil can be caused by : Opioids morphine, organophosphates, phenothiazines, clonidine, mushroom poisoning, chloral hydrate, carbolic acid and pontine hemorrhage. 