This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diseases of orbit, Lids and lacrimal apparatus, Subject name: Ophthalmology
[{'content': 'Orbital apex syndrome constitutes all except- \nSelect and explain. \nA. Ptosis, B. CSF rhinorrhea, C. Ophthalmoplegia, D. Pain over distribution of optic nerve', 'role': 'user'}, {'content': 'Answer: B \nExplanation: *Superior orbital fissure syndrome consists of deep orbital pain, frontal headache and progressive paralysis of CN 6, 3 and 4 and in that order. *Orbital apex syndrome is superior orbital fissure syndrome along with the involvement of optic nerve and maxillary division of trigeminal nerve. *Both these syndromes can occur as a complication of sinusitis. Ref: Dhingra 5th/e p.213', 'role': 'assistant'}]