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': 'All satements are true about papilloedema except \nSelect and explain. \nA. Collection of extra-cellular fluid, B. Disruption of neurofilament, C. Stasis of exoplasmic transpo, D. Swelling of the axon', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Disruption of neurofilament The pincipal pathophysiology of optic disc swelling is blockage of axoplasmic tranpoQ. It shows signs of edema without inflammation with collection of extra-cellular fluidQ. The nerve fibre of the optic nerve head are also swollen.', 'role': 'assistant'}]