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': 'All are features of early retinal detachment except – \nSelect and explain. \nA. Retro–orbital pain, B. Photopsia, C. Floaters, D. Darkened peripheral field of vision', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Retinal detachment is a painless condition (no retroorbital pain) → Painless sudden loss of vision.\nOther three symptoms occur in retinal detachment.', 'role': 'assistant'}]