In Optic neuritis in children, all symptoms are present EXCEPT -
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).
Afferent pupillary defect
Headache and vomiting
Pain on movements of eye ball
Sudden vision loss