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
In Optic neuritis in children, all symptoms are present EXCEPT - 
Select and explain. 
A. Afferent pupillary defect, B. Headache and vomiting, C. Pain on movements of eye ball, D. Sudden vision loss
B: Headache and vomiting
Answer: B: Headache and vomiting 
Explanation: Optic neuritis cause sudden loss of vision with pain on ocular movement. There is afferent pupillary defect (RAPD).
Headache and vomiting are symptoms of increased ICT, which occur in papilloedema not in papillitis (optic neuritis).