Optic neuritis is a demyelinating disease of the central nervous system, caused by an immune-inflammatory response of the body. Most patients with optic neuritis have severe immune dysfunction, making full recovery on their own very difficult. Although a very small number are fortunate enough to potentially self-heal without specific treatment, such cases are rare. Treatment for optic neuritis is essential because if left untreated, it could likely lead to permanent vision reduction. Additionally, the disease may also affect the brain and spinal cord, leading to clinical manifestations such as paralysis of limbs. Therefore, it is advisable to actively treat this condition. The primary treatment involves administration of corticosteroids and possibly long-term oral intake of immunomodulators to prevent recurrence. (Medications should be used under the guidance of a doctor based on specific conditions.)