This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
Mydriasis is/are caused by: 
Select and explain. 
A. Homer syndrome, B. Neurosyphilis, C. Organophosphorus poisoning, D. Atropine
D: Atropine
Answer: D: Atropine 
Explanation: D i.e. Atropine Pinpoint pupils are seen in - 'Car Chlor Or Mor' i.e. Carbolic acid, Chloral hydrate, Organophosphorus, Morphine (opiate)Q and 'New Horn' i.e. neurosyphilis/tabes dorsalis (spinal miosis or small, irregular Argyll Robeson pupil) and Horner's syndrome. Atropine and cocaine cause mydriasisQ Barbiturate poisoning 1/t constricted & reacting pupils which dilate during terminal asphyxiaQ