This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Squint, Subject name: Ophthalmology
[{'content': 'True about optic nerve glioma \nSelect and explain. \nA. Seen in old individuals, B. Painful proptosis, C. Can cause hematoma, D. Unilateral proptosis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Optic Nerve Glioma *Can cause gradual, painless, unilateral Proptosis *a/w Neurofibromatosis 1 *Mainly affect children (1-10 year) *Have characteristic fusiform enlargement of optic nerve Optic Nerve Glioma - Fusiform Enlargement of optic nerve - Nerve is not seen separately from the mass', 'role': 'assistant'}]