This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Ophthalmology
Retrobulbar injection is given in - 
Select and explain. 
A. Inside muscle cone, B. Outside muscle cone, C. Subtenon space, D. Subperiosteum
A: Inside muscle cone
Answer: A: Inside muscle cone 
Explanation: It is given in the central space Central space : also called, muscular cone or retrobulbar space. It is bounded anteriorly by the Tenon's capsule lining back of the eyeball and peripherally by the four recti muscles and their intermuscular septa in the anterior pa. In the posterior pa, it becomes continuous with the peripheral space. Tumors lying here produces axial proptosis. Ref:AK Khurana 6thE pg 403