This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Proptosis, Enophthalmos, Developmental Anomalies, Subject name: Ophthalmology
[{'content': 'Most common cause of proptosis in adults is - \nSelect and explain. \nA. Orbital cellulitis, B. Thyroid Ophthalmopathy, C. Carotico - cavernous fistula, D. Trauma', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Thyroid Ophthalmopathy o The most common cause of unilateral proptosis in children is orbital cellulitis.o The most common cause of unilateral proptosis in adults is thyroid ophthalmopathy.", 'role': 'assistant'}]