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
True about optic nerve glioma 
Select and explain. 
A. Seen in old individuals, B. Painful proptosis, C. Can cause hematoma, D. Unilateral proptosis
D: Unilateral proptosis
Answer: D: Unilateral proptosis 
Explanation: 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