RESULTS:Among the 536 children,92 cases had Caesarean birth(17.2%),49 cases had dystocia of normal labor(9.1%),395 cases had natural labor(73.7%)includidng 53 cases with premature birth(9.9%).

• 结果:536例弱视儿中出生时剖腹产92例占17.；2%25、自然分娩难产(包括胎吸和产钳)49例占9