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': "Grave's ophthalmopathy mostly presents as September 2010 \nSelect and explain. \nA. Proptosis, B. Ptosis, C. Reduced intraocular tension, D. Increased power of convergence", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. A: Proptosis Graves' ophthalmopathy (also known as thyroid eye disease (TED), dysthyroid/thyroid-associated orbitopathy (TAO), Graves' orbitopathy) is an autoimmune inflammatory disorder affecting the orbit around the eye, characterized by upper eyelid retraction, swelling (edema), redness (erythema), conjunctivitis, reduce dpower convergence and bulging eyes (proptosis).", 'role': 'assistant'}]