This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Retina, Subject name: Ophthalmology
[{'content': '100 day glaucoma is seen in which of the following conditions? \nSelect and explain. \nA. Central retinal vein occlusion (CRVO), B. Steroid induced glaucoma, C. Neovascular glaucoma, D. Central retinal aery occlusion (CRAO)', 'role': 'user'}, {'content': 'Answer: A \nExplanation: CRVO cause hypoxia and release of VEGF causing neovascularisation of iris and thus neovascular glaucoma in 20% cases within 3 months (also known as 90days/100days glaucoma).', 'role': 'assistant'}]