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
Treatment of Choice for prophylaxis of Right eye in case of primary open angle glaucoma of Left eye 
Select and explain. 
A. Goniotony, B. Trabeculectomy, C. Laser trabeculoplasty, D. Seton Surgery
C: Laser trabeculoplasty
Answer: C: Laser trabeculoplasty 
Explanation: Treatment of Choice for prophylaxis of healthy eye when follow eye has primary open angle glaucoma is laser trabeculoplasty.