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: Unknown
A patient has developed an acute congestive glaucoma in his right eye. The prophylactic measure to be taken in the fellow eye is: 
Select and explain. 
A. Topical steroids, B. Peripheral iridectomy, C. Antibiotics, D. Laser iridotomy
D: Laser iridotomy
Answer: D: Laser iridotomy 
Explanation: None