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
[{'content': 'Pseudoproptosis caused by \nSelect and explain. \nA. Buphthalmos, B. Meningioma of optic nerve, C. Orbital cellulitis, D. Dermoid cyst', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer- A. Buphthalmoscauses are:Buphthalmos (congenital glaucoma),High myopia,Upper lid retraction,Paralysis of the extrinsic muscles,Stimulation of muller muscle by cocaine,Shallow orbit as in craniofacial dysostosis', 'role': 'assistant'}]