Papilloedema is characterised by all of the following EXCEPT-
Loss of retinal venous pulsations
Transient obscurations of vision
Sudden painless loss of vision
Disc oedema
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.