上睑下垂是眼科临床较常见的疾患。患者睑裂较正常人狭小,上睑部分或全部遮盖瞳孔,妨碍视力,在睁眼时上睑难以举起,常用额肌收缩,代偿其上睑上举,结果额纹增加,眉毛竖起,呈仰首视物状,影响面容。完全性上睑下垂的小儿,由于遮挡瞳孔,可能形成弱视,要争取早日手术。 Ptosis is a more common condition in ophthalmology. Patients with palpebral fissure more narrow than normal, part or all of the upper eyelid cover the pupil, hinder eyesight, the upper eyelid is difficult to lift in the eyes open, commonly used frontal muscle contraction, compensatory upper eyelid lift, the amount of forehead increased, eyebrows erected , Was Yang as the first appearance, affect the face. Complete ptosis in children, due to occlusion pupil, may form amblyopia, to strive for early surgery.