Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Optic neuritis ?
    ### Response:
    How is optic neuritis diagnosed? The diagnosis of optic neuritis is usually based on clinical findings and ophthalmologic examination. A careful history, including information about recent illness, fever, or immunizations is helpful. An eye exam should be conducted with assessment of visual acuity, pupil reactions, color vision and peripheral vision.
    