Many people often feel the eyelid jumping, the people also often said “left eye jumping money, right eye jumping disaster”. This means that eyelid jumping is a common phenomenon and people are not clear about the cause of eyelid jumping. In medical terms, eyelid jumping is called blepharospasm. There are two muscles in the eyelid, one is called the orbicularis oculi, which is shaped like a wheel and surrounds the eye, and when it contracts the eyelid closes; the other muscle is called the levator palpebrae, and when it contracts the eye opens. These two muscles are constantly contracting and relaxing so that the eyes can open and close. If the nerves that innervate these two muscles are stimulated by some factor, one or both muscles will contract repeatedly, which manifests as involuntary eyelid fluttering. The symptoms are mild enough to be felt by oneself and not visible to bystanders. Only in severe cases will the eyelids be visible to bystanders. There are two types of eyelid jumping: physiological and pathological. Physiological eyelid jumping does not require treatment. Many people experience this kind of eyelid jumping, the attack is transient, the attack time is very short, often only a few seconds, and the degree of jumping is not serious. This type of eyelid flutter generally does not require special treatment. As long as the eyes are closed and rested for a while, a local massage or a hot compress is applied, the eyelid jumping will disappear. Pathological eyelid jumping needs to be treated. Some people not only have eyelid jumping, but even the corners of the mouth and half of the face are twitching together. Most of this eyelid jumping is caused by facial muscle spasm, and a few have other diseases as the cause. The basic principle is that the facial nerve that governs the movement of eyelid muscles is compressed by blood vessels, resulting in abnormal nerve impulses. Therefore, if you experience eyelid jumping for a long period of time and gradually worsens, you should go to the hospital and ask a neurosurgeon for examination. If it is determined that the facial muscle spasm is caused by the compression of the facial nerve root by blood vessels, it is usually controlled by oral carbamazepine type drugs. If the effect of medication is unsatisfactory or ineffective, microvascular nerve decompression can be performed.