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 option for glaucoma includes all except 
Select and explain. 
A. Trabeculectomy, B. Trabeculotomy, C. Vitrectomy, D. Viscoanulostomy
C: Vitrectomy
Answer: C: Vitrectomy 
Explanation: Ans. Vitrectomy