Marcus- Gunn综合征是一种特殊的先天性上睑下垂 ,临床少见 ,2 0 0 1年 2月我院收治 1例 ,现报告如下。1　临床资料患儿 ,女 ,9岁。自幼左眼上睑下垂 ,家长发现患儿在张口、咀嚼时 ,左眼上睑提高。患儿为第 2胎 ,足月顺产 ,既往体健 ,父母非近亲结婚 ,家族中无类似病史。全身检 Marcus-Gunn syndrome is a special type of congenital blepharoptosis, clinically rare in our hospital in February 2001 admitted to 1 case, are as follows. 1 clinical data children, female, 9 years old. Since his childhood left eye ptosis, parents found that children in the mouth, chewing, left eye upper eyelid. Children with a second child, full-term spontaneous birth, past physical health, parents of non-relatives married, no similar family history. Whole body examination