424 / | HD | DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS |
400 | DF | PREPARATIONS CHARACTERIZED BY SPECIAL PHYSICAL FORM {12} |
422 | DF | .~ Implant or insert {5} |
427 | .~.~ Ocular {2} | |
428 | DF | .~.~.~> Bioerrodable, resorbable, or dissolving |
429 | DF | .~.~.~> Contact lens |