先天性睑下垂,多为双侧性,有遗传因素,如为提上睑肌残缺,则通常为单纯性,如为神经核发育不全,除上睑下垂外,常伴有其他眼外肌麻痹或小睑裂、内眦赘皮等。上睑下垂轻者可遮盖部分瞳孔,严重者则全部瞳孔被遮盖,不但有碍美观,而且影响视力,以致造成重度弱视。因此,深入探讨发病 Congenital palpebral ptosis, mostly bilateral, genetic factors, such as the levator tendon is usually simple, such as the nuclear hypoplasia, in addition to ptosis, often accompanied by other extraocular muscle paralysis Or palpebral fissure, epicanthus and so on. Lesser ptosis can cover part of the pupil, in severe cases, all the pupils are covered, not only hinder the appearance, but also affect vision, resulting in severe amblyopia. Therefore, in-depth study of the disease