Optic neuritis is generally caused by the demyelination of the optic nerve, presenting as a clinical syndrome. Patients mainly exhibit significant vision loss, which can affect one or both eyes. It is crucial for those suffering from optic neuritis to receive timely treatment, including the consumption of group B vitamins and corticosteroid medications. Dietary considerations are also important: first, patients should consume foods rich in B vitamins, which include lean meats, fish, soybeans, buckwheat, corn, millet, and sorghum, all of which contain abundant B vitamins. Second, a higher intake of fresh vegetables and fruits is advised, as these contain plenty of folic acid and vitamins, which can aid in the recovery from optic neuritis. Third, the consumption of foods rich in vitamin B12, essential for the formation of myelin in the optic nerve, is also important.