使用聚四氟乙烯（ＰＴＦＥ）异质移植膜代替自体粘膜移植，对６４眼进行分组对比研究，结果显示ＰＴＦＥ异质植片对组织刺激性小，能显著减少睑球粘连发生率。在碱烧伤后３周末，实验组与对照组睑球粘连发生率分别为３７．５％与７１．９％（Ｐ＜０．０１）。病理学检查显示实验组结膜仅有轻度异物反应及慢性炎症反应。认为ＰＴＦＥ异质膜用于眼前段重建手术，是理想的结膜再生引导物 The use of polytetrafluoroethylene (PTFE) heterogeneous graft instead of autologous mucosal transplantation, 64 cases were grouped comparative study showed that PTFE heterogeneous grafts on tissue irritation, can significantly reduce the incidence of symblepharon. At 3 weeks after alkali burn, the incidence of symblepharon in experimental and control groups was 37.5% and 71.9%, respectively (P <0.01). Pathological examination showed only mild foreign body conjunctiva reaction and chronic inflammatory reaction. PTFE heterogeneous membrane that is used for anterior segment reconstruction surgery, is the ideal guide for conjunctival regeneration