Chronic relapsing inflammatory optic neuropathy (CRION)
Written and reviewed by Dr Ibrahim Imam, Consultant Neurologist. Last reviewed .
Chronic relapsing inflammatory optic neuropathy (CRION). CRION presents as a subacute optic neuropathy. Fully referenced neurology checklist.
Clinical features
- CRION presents as a subacute optic neuropathy
- It is usually painful
- It is bilateral but usually sequential
- It produces a worse visual loss than typical optic neuritis
- It has a relapsing course
Differential diagnosis of optic neuropathy
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Magnetic resonance imaging (MRI)
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Cerebrospinal fluid (CSF)
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Treatment
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