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': 'In patients with anterior uveitis, decrease in vision due to posterior segment involvement can occur because of – \nSelect and explain. \nA. Visual floaters, B. Inflammatory disc edema, C. Exudative retinal detachment, D. CME', 'role': 'user'}, {'content': 'Answer: D \nExplanation: "Cystoid macular edema is a common cause of visual loss in patients with uveitis and may be observed in the setting of severe anterior or intermediate uveitis. Long-standing or recurrent macular edema can cause permanent loss of vision due to cystoid degeneration".\n- Lange Ophthalmology', 'role': 'assistant'}]