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
YAG laser is used in the treatment of: 
Select and explain. 
A. Retinal detachment, B. Diabetic retinopathy, C. Open-angle glaucoma, D. After cataract
D: After cataract
Answer: D: After cataract 
Explanation: Ans. After cataract