This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Glaucoma, Subject name: Ophthalmology
[{'content': 'All are the causes of neovascular glaucoma except \nSelect and explain. \nA. Central serous retinopathy, B. Diabetic retinopathy, C. lntraocular tumour, D. Central retinal vein occlusion', 'role': 'user'}, {'content': "Answer: A \nExplanation: NEOVASCULAR GLAUCOMA (NVG) It is an intractable glaucoma which results due to formation of neovascular membrane involving the angle of anterior chamber. Etiology: It is usually associated with neovas cularization of iris (rubeosis iridis). Neovascularization develops following retinal ischaemia, which is a common feature of : \x011) Diabetic retinopathy, 2)\x01Central retinal vein occlusion, 3)\x01Sickle-cell retinopathy and 4)\x01Eales' disease. \x01Other rare causes are chronic intraocular inflammations, intraocular tumours, long-standing retinal detachment and central retinal aery occlusion. Ref:- A K KHURANA; pg num:- 234", 'role': 'assistant'}]