This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ophthalmology Q Bank, Subject name: Ophthalmology
[{'content': "Not a pa of Retrobulbar space \nSelect and explain. \nA. Extra ocular muscles with intermuscular septa, B. Optic nerve, C. Posterior pa of tenon's capsule enclosing the globe, D. Equatorial veins", 'role': 'user'}, {'content': "Answer: D \nExplanation: Equatorial veins are not a pa of retrobulbar space of the orbit Retrobulbar Space/ Central Space / muscular cone Contents: Extra ocular muscles with intermuscular septa Includes Optic nerve Boundaries : > anteriorly - by Posterior pa of tenon's capsule enclosing the globe > peripherally - by four recti muscles and their intermuscular septa > posteriorly - continous with the peripheral space Site of putting retrobulbar injection Tumors lying here produce axial proptosis", 'role': 'assistant'}]