Examples of such materials are medical grade rubber, silicone, polyethylene, polypropylene, polytetrafluoroethylene (e.g. Teflon) and other medical compositions or material known to persons skilled in the art and approved for such use by the FDA. If an implant is used as a punctum plug, the diameter of the elongated member of the punctum plug would be in the order of about 0.2 mm to about 1.2 mm a