Optic neuritis is primarily caused by the demyelination of the optic nerve. It is a type of central nervous system demyelinating disease. Therefore, patients with optic neuritis can take some vitamins, mainly B vitamins, including vitamin B12, vitamin B6, vitamin B1, etc. These can nourish the nerves and promote the regeneration of the myelin sheath. In addition, patients with optic neuritis also need to use some corticosteroids. Corticosteroids mainly suppress the immune response and inhibit the body's antibodies from damaging the myelin sheath of the optic nerve, playing a very important role in foundational treatment. Additionally, some severe cases of optic neuritis may even require the use of immunoglobulin and other immunosuppressive agents are also used in patients with optic neuritis.