. . . "If an implant is to function as a temporary punctum plug or temporary lacrimal implant to provide temporary blockage of the punctum opening or of a portion of the canaliculus, the temporary implant can be fabricated from a medically grade, dissolvable biodegradable material such as collagen, catgut, biodegradable suturing material, polyglycolic acid or other medical compositions or material known" . .