All are seen in papilloedema EXCEPT -: (A) Hyperemia of disc, (B) Sudden vision loss, (C) Post - neuritic atrophy, (D) Macular fan
Answer is B. Vision loss occurs in long standing papilloedema (not in acute pappiloedema), and that occurs in less than 25% of patients.
Post neuritic atrophy also occurs in long standing papilloedema and not acute papilloedema.