下预侧向运动——瞬目综合征(Jaw-Winking Syndrome)又称Marcus-Gunn综合征。患者表现为单侧上脸下垂,当下颌向健侧运动时,患侧下垂之上睑迅速抬起,上唇亦可同时抬高。该综合征男多于女,发生于左上睑比右侧为多,有人报告该病在先天性上睑下垂症中占2％。 Under the pre-lateral movement - blink syndrome (Jaw-Winking Syndrome), also known as Marcus-Gunn syndrome. Patients showed unilateral face drooping, when the mandibular to the contralateral movement, the ipsilateral ptosis rapidly lifting the upper lip can also be elevated at the same time. This syndrome is more common in males than in females, occurring in the left upper eyelid more than in the right one. It has been reported that the disease accounts for 2% of patients with congenital ptosis.