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: Anaesthesia
Type of laser used for iridotomy ? 
Select and explain. 
A. Excimer, B. Krypton red, C. Nd:YAG, D. Diode
C: Nd:YAG
Answer: C: Nd:YAG 
Explanation: Ans. is 'c' i.e., Nd:YAG