The diagnosis of<unk>  or<unk>  optic neuropathy is usually established by a detailed medical history and careful eye examination. If the medical history clearly points to a cause, neuroimaging to rule out a compressive or infiltrative lesion is optional. However, if the medical history is atypical or does not clearly point to a cause, neuroimaging is required to rule out other causes and confirm the diagnosis. In most cases of suspected<unk>  or<unk>  optic neuropathy that require neuroimaging, an MRI scan is obtained. Further testing, guided by the medical history and physical examination, can be performed to elucidate a specific<unk>  or<unk>  deficiency as a cause of the optic neuropathy. Examples include blood testing for methanol levels or vitamin B12 levels.
Toxic and nutritional optic neuropathy
Chronic relapsing inflammatory optic neuropathy
Autoimmune optic neuropathy
Arteritic anterior ischemic optic neuropathy
Ischemic optic neuropathy
Posterior ischemic optic neuropathy
Kjer's optic neuropathy
Late congenital syphilitic oculopathy