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
All are the causes of neovascular glaucoma except 
Select and explain. 
A. Central serous retinopathy, B. Diabetic retinopathy, C. lntraocular tumour, D. Central retinal vein occlusion
A: Central serous retinopathy
Answer: A: Central serous retinopathy 
Explanation: 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 : 1) Diabetic retinopathy, 2)Central retinal vein occlusion, 3)Sickle-cell retinopathy and 4)Eales' disease. Other rare causes are chronic intraocular inflammations, intraocular tumours, long-standing retinal detachment and central retinal aery occlusion. Ref:- A K KHURANA; pg num:- 234