AIM: To investigate the effect of zebularine( Zeb)loaded Poly( ethylene glycol)- block- poly( ε-caprolactone) methyl ether( MePEG- PCL) nanoparticles( NPs) on the viability,attachment,and apoptosis of in vitro cultured lens epithelial cells( LECs).METHODS: In vitro cultured infant human lens tissue HLE B- 3 immortalized cells were distributed randomly divided into six groups. Each group was administered with free Zeb 50μ mol /L( ZebF1 group),100μ mol /L( ZebF2group), Zeb- loaded MePEG- PCL NPs 50μ mol /L( Z...