Ocular levator muscle weakness is a common clinical condition known as ptosis and is often seen in ophthalmology as well as neurology. The main cause of ptosis is the incomplete or loss of function of the levator muscle and Müller’s smooth muscle, resulting in partial or complete ptosis, which can partially obscure the pupil in mild cases or completely obscure the pupil in severe cases, and can also cause amblyopia in congenital ptosis. The diagnosis is usually made visually based on the patient’s symptoms and can also be confirmed with an eye exam. If the patient shows symptoms such as drooping upper eyelids, weakness in opening the eyes, excessive covering of the black eye, increased transverse frontal lines, head tilting, strabismus, and diplopia, then this suggests weakness of the eye lift muscle. This is medically known as ptosis. 2. Judgment based on auxiliary examinations The position of the upper eyelid margin when the eye is gazing extremely upward and downward can be measured with offsetting frontalis contraction force, and if the difference between the front and back is less than 4 mm, it indicates severe insufficiency of the levator muscle. If you have weakness of the levator muscle and drooping eyelids, you should go to a neurologist or ophthalmologist at a regular hospital to have the cause of the problem examined and treated. The treatment methods are as follows: 1. Conservative treatment: mainly for patients with congenital weakness, which requires symptomatic treatment for the specific cause in the early stages, such as nerve nutrition, glucocorticoids, blood circulation, physiotherapy and massage; 2. Surgical treatment: for patients with congenital weakness or those for whom conservative treatment is ineffective for more than six months. The appropriate surgical procedure can be chosen according to the condition. Patients with oculomotor nerve palsy should not undergo surgery.