AIM: To compare the curative effect of conjoint fascial sheath suspension and the simple frontalis muscle suspension for moderate or severe ptosis.METHODS: In March 2013 to March 2016 in our hospital,46 patients with moderately severe ptosis( 68 eyes) were taken as the research objects. According to random number table method,they were divided into study group and the control group,23 cases in each group. Study group( 34 eyes) received the joint fascial sheath suspension( CFS),the control group( 34 eyes) re...