The neuro opthalmologist told me that if I did have it that it was further back on the
optic nerve toward the visual pathways and brain, This is called Retoubular
Neuritis. It has the same symptoms as ON, infact it is just another form of it. I do believe I had it because I had every symptom of it. The pain was awful and I begged my neuro for the steriods, but he said that the acute stage had passed and I was 3/4 of the way through it, and the steriods would not be affective at this point.