Myasthenia gravis, if only presenting with ptosis, has a certain possibility of being cured. This is called ocular myasthenia gravis, characterized by ptosis that covers the pupil. Some patients may also experience eye movement disorders, leading to double vision. This disease is generally caused by autoimmune dysfunction. Patients often have thymomas, thymic hyperplasia, or incomplete thymic involution. Consultation with a thoracic surgeon is necessary, and if required, surgical removal of the thymoma should be considered, followed by a methylprednisolone pulse therapy. If there is no associated thymoma, treatment in neurology with methylprednisolone pulse therapy is also preferred. Generally, after treatment, more than half of the patients can be completely cured without relapse. （The use of medication should be under the guidance of a physician.）