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': 'Cotton wool spots are commonly seen in –a) AIDSb) DMc) Hypertensiond) CMV \nSelect and explain. \nA. ab, B. bc, C. acd, D. abc', 'role': 'user'}, {'content': "Answer: D \nExplanation: Causes of soft exudates (cotton wool spots)\n\nAll types of severe hypertension (hypertensive retinopathy) including renal disease, Toxemia of pregnancy.\nDiabetic retinopathy\nCollagen vascular disorders :- SLE, PAN, systemic sclerosis, scleroderma, wegener granulomatosis.\nInfections :- AIDS, septic retinitis (including SABE), rarely CMV retinitis in AIDS.\nMicroembolization :- IV drug abuse, Post cardiac surgery, Fat embolism or Purtscher retinopathy.\nOther Eale's disease, Adults anemia (Hb < 6.6-8.0 g/d1), Pseudoxanthoma elasticum, Neoplasia (Leukemia, Hodgkin's disease), Sickle cell retinopathy, radiation retinopathy\nNow you must be thinking, why have I not included CMV in the answer? Read question carefully, examiner is asking about common causes. In CMV retinitis, cotton wool spots occur rarely.", 'role': 'assistant'}]