The inability to open the eyelids is a sign of ptosis, which is a very common condition in ophthalmology and can be divided into two types: the first is congenital ptosis due to congenital hypoplasia of the levator muscle; the second condition is acquired ptosis, which is usually secondary to various acquired diseases such as myasthenia gravis, orbital trauma, actinic nerve palsy, etc. In the case of congenital ptosis, the symptoms are more severe, or in the case of monocular ptosis, early surgical correction is required to avoid the formation of amblyopia; in the case of acquired ptosis, symptomatic treatment for the specific cause is usually required in the early stages, and surgery is considered only if conservative treatment is ineffective. There are two commonly used surgical treatments for this condition, the first being levator muscle shortening and the second being frontalis suspension.