Please read above. It depends on whether your AION is "arteritic" in which case recovery is poor, known as Giant Cell Arteritis or Temporal Arteritis and treatment with oral steroids long term is needed OR "non-arteritic" in which prognosis for recovery is good. Treatment is control blood pressure, cholesterol, don't smoke, good diet, exercise, make sure body weight normal.
You can read the section on e-medicine or web MD if you wish. My mother has non arteritic AION and made a full recovery. Moreover that has been my experience in the 36 years I've practice ophthalmology in Missouri.
JCH MD
Regarding your post on aion, i had an event of aion in my left eye 15 years ago, lost my central vision. The vision never came back. Last month I had an aion event in my right eye, lost bottom half of vision. Last week I had a second event in my right eye with further vision loss. My neurologist says I willl not regain any vision, yet you state recovery is good. What do you base your comments on, do I have any hope?
With AION the most important thing to be certain is that it is not arteritic (Giant cell arteritis). Diagnosis would hinge on Sedimentation rate and C-reactive protein tests plus the clinical history. If it is arteritic then large doses of oral cortison are needed to get the sed rate down. The section on emedicine is especially good.
If its non-arteritic there is no treatment for the eye problem and visual recovery is usually good. Again emedicine entry is excellent.
JCH MD