Is an inflammation that damages the optic nerve, a bundle of nerve fibers that transmits visual information from your eye to your brain. Pain and temporary vision loss in one eye are common symptoms of optic neuritis.
Pain. Most people who develop optic neuritis have eye pain that's worsened by eye movement. Sometimes the pain feels like a dull ache behind the eye.
Vision loss in one eye. Most people have at least some temporary reduction in vision, but the extent of loss varies. Noticeable vision loss usually develops over hours or days and improves over several weeks to months. Vision loss is permanent in some cases.
Visual field loss. Side vision loss can occur in any pattern.
Loss of color vision. Optic neuritis often affects color perception. You might notice that colors appear less vivid than normal.
Flashing lights. Some people with optic neuritis report seeing flashing or flickering lights with eye movements.
Complete blood count
Potassium Sodium Chlorine (K, Na, Cl) (blood)
Diplopia test (double vision)
Eccentricity angle test
Autorefractometry (narrow pupil)
Transcranial duplex ultrasound of intracranial and extracranial vessels