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
The most common retrobulbar orbital mass in adults – 
Select and explain. 
A. Nerurofibroma, B. Meningioma, C. Cavernous haemangioma, D. Schwannoma
C: Cavernous haemangioma
Answer: C: Cavernous haemangioma 
Explanation: Most common orbital tumor (retrobulbar mass) in adult is benign vascular tumors like cavernous hemangioma.