先天性上睑下垂是由于提上睑肌功能障碍使上睑缘遮盖部分或全部瞳孔 ,手术目的是增大视野范围 ,提高视力 ,防止弱视 ,并改善外观 ,对于提上睑肌功能不良 (肌力在 3ｍｍ以下 )的上睑下垂 ,以往手术选用的材料为丝线、巩膜、肠线等。目前最理想的材料是用自体或同种异体阔筋膜。 Congenital ptosis is due to the levator palpebral dysfunction so that the upper eyelid edge cover part or all of the pupil, the purpose of surgery is to increase the visual field, improve visual acuity, prevent amblyopia, and improve the appearance of levator muscle dysfunction (muscle Force in the following 3mm) ptosis, the past surgical selection of materials for the silk, sclera, gut and so on. At present, the most ideal material is autologous or allogeneic fascia.