a plug is presented . the plug includes biodendrimer and is suitably sized and shaped to be placed within a punctum or a lacrimal canal of an eye . the plug , when placed within the punctum or the lacrimal canal for approximately six months , can at least partly occlude the punctum or the lacrimal canal throughout the approximately six months . the plug can completely dissolve or partially dissolve and fall out of the punctum or the lacrimal canal after the approximately six months . a method of treating an eye is also presented . the method includes introducing biodendrimer into a punctum or a lacrimal canal of the eye and polymerizing the biodendrimer such that the polymerized biodendrimer at least partly occludes the punctum or the lacrimal canal for at least approximately six months .