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  2. Relative afferent pupillary defect - Wikipedia

    en.wikipedia.org/wiki/Relative_afferent_pupillar...

    It is also common in retrobulbar optic neuritis due to multiple sclerosis but unreliable in bilateral optic neuritis. [4] [5] A total CN II lesion, in which the affected eye perceives no light, is very similar to a Marcus Gunn pupil; to distinguish them, in a CNII total lesion shining the light in the affected eye produces zero dilation nor ...

  3. Optic neuritis - Wikipedia

    en.wikipedia.org/wiki/Optic_neuritis

    Optic neuritis describes any condition that causes inflammation of the optic nerve; it may be associated with demyelinating diseases, or infectious or inflammatory ...

  4. Neuromyelitis optica spectrum disorder - Wikipedia

    en.wikipedia.org/wiki/Neuromyelitis_optica...

    Optic neuritis: Either 1) brain MRI showing normal findings or only nonspecific white matter lesions, or 2) optic nerve MRI showing T2-hyperintensity, or T1 enhancing lesion, greater than 1/2 optic nerve length or involving optic chiasm Acute myelitis: intramedullary lesion > 3 contiguous segments, or spinal atrophy ≥ 3 contiguous segments

  5. Chronic relapsing inflammatory optic neuropathy - Wikipedia

    en.wikipedia.org/wiki/Chronic_relapsing...

    Corticosteroid responsive optic neuritis not associated with demyelinating disease should also be ruled out, including sarcoidosis, systemic lupus erythematosus, or other systemic autoimmune disease. [11] Hereditary causes such as Leber's hereditary optic neuropathy are also part of the differential diagnosis. [12]

  6. Visual pathway lesions - Wikipedia

    en.wikipedia.org/wiki/Visual_pathway_lesions

    Lesions involving the whole optic nerve cause complete blindness on the affected side, that means damage at the right optic nerve causes complete loss of vision in the right eye. [3] Optic neuritis involving external fibers of the optic nerve causes tunnel vision. [4] Optic neuritis involving internal fibers of the optic nerve causes central ...

  7. Non-arteritic anterior ischemic optic neuropathy - Wikipedia

    en.wikipedia.org/wiki/Non-arteritic_anterior...

    Non-arteritic anterior ischemic optic neuropathy (NAION) is a medical condition characterized by loss of vision caused by damage to the optic nerve as a result of ischemia, or insufficient blood supply. The key symptom of NAION is optic disc swelling, which typically resolves within 2 months, but often leads to optic atrophy. The likelihood of ...

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Signs and symptoms of multiple sclerosis - Wikipedia

    en.wikipedia.org/wiki/Signs_and_symptoms_of...

    Up to 50% of patients with MS will develop an episode of optic neuritis and 20% of the time optic neuritis is the presenting sign of MS. The presence of demyelinating white matter lesions on brain MRIs at the time of presentation for optic neuritis is the strongest predictor in developing clinical diagnosis of MS. Almost half of patients with ...

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