With proper medical attention, infections can usually be successfully treated without long-term visual loss.

These diseases often cause sudden rapid visual loss in one eye.

Patients can typically define the time and extent of visual loss precisely.

Early recognition and treatment of the problem in children can help to prevent permanent visual loss.

Both the rate of change and the degree of visual loss are variable among those affected, even within the same family.

Earlier studies reported permanent visual loss in a smaller percentage of patients, he said.

His symptoms began at age 28 with a sudden transient visual loss after the funeral of a friend.

Most ophthalmologists will not advocate any treatment unless visual loss is present and ongoing.

The prognosis for those affected left untreated is almost always that of continued significant visual loss in both eyes.

The visual loss depends on which part of the nerve is affected.