is inflammation of the optic nerve
usually seen in association with multiple sclerosis
Her feeling of symptom free at sea level is because of the fact that at sea level humidity is high. The symptoms in optic neuritis get worsen on exposure to high temperature.
The mainstay of treatment is by steroids
in acute attack.
Immunomodulators are required in patients with multiple sclerosis to prevent blinding complications associated with optic neuritis. I advice you to consult your eye doctor or immunologist for immunomodulation therapy as your wife is having multiple sclerosis.