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: Ophthalmology
Which laser is used in the manage ment of after cataracts? 
Select and explain. 
A. Argon, B. Krypton, C. Nd :YAG, D. Excimer
C: Nd :YAG
Answer: C: Nd :YAG 
Explanation: Nd :YAG