The 48-year-old Mr. Wu clearly has a regular schedule and gets enough sleep every day, but he looks listless and his eyes are big and small. He thought it was natural aging, but he went to see a doctor for examination because his eyelids occasionally drooped to block his sight and affect his normal life. The doctor diagnosed him as "muscle weakness".

Fan, director of ophthalmology at Dalin Tzu Chi Hospital, pointed out that myasthenia gravis is an abnormal phenomenon of neuromuscular conduction and belongs to chronic autoimmune disease. There are some muscles in the human body that are controlled by the will, called voluntary muscles, which require nerve conduction to cause action. Muscle weakness can lead to poor conduction, abnormal muscle conduction, and more and more weakness and fatigue.

"About 75% patients with myasthenia gravis will only have eye symptoms, and they will have drooping eyelids and diplopia," Fan said. The drooping eyelids will cover the eyes, so they look different sizes, causing the problem of different sizes of eyes. Diplopia is because the eye muscles are abnormal when rotating, so you will see two images. Diplopia is not necessarily blurred vision. Sometimes the images will be stacked together, sometimes up and down, sometimes left and right.

"Myasthenia is an autoimmune disease, and its symptoms are sometimes good and sometimes bad, and may even change every minute or hour," Fan said, because myasthenia will have the problem of eye muscle weakness, and usually it will get better after rest or sleep. When I get up in the morning, I am full of energy, but at night, I feel that my eyes can't open and my vision will become more blurred.

2 minutes ice self-examination If you want to have a check-up of eye weakness, you can go to the ophthalmology department for consultation. Fan said there was a simple examination in ophthalmology. After 2 minutes of ice on the eyes, if the eyes get better, muscle weakness may occur. Patients may wish to try ice compress at home and then go to the hospital for further examination.

When the body has symptoms of muscle weakness, neurologists usually do drug tests first to see if it will get better immediately after injection, or electrophysiological examination of neuromuscular diseases, or check whether there are antibodies in serum.

Fan also reminded that although more than 70% of myasthenia gravis is an eye symptom, the treatment may involve neurology and even rheumatology and immunology. The best treatment method can be found in three departments.