PAPAIN CONSISTS CHIEFLY OF A MIXTURE OF PAPAIN AND CHYMOPAPAIN, PROTEOLYTIC ENZYMES WHICH HYDROLYSE POLYPEPTIDES, AMIDES, AND ESTERS, ESPECIALLY AT BONDS INVOLVING BASIC AMINO ACIDS, OR LEUCINE OR GLYCINE, YIELDING PEPTIDES OF LOWER MOLECULAR WEIGHT, AND USED TOPICAL DEBRIDING AGENT IN CUNJUNCTION WITH UREA AND REMOVAL OF PROTEIN DEPOSITS FROM THE SURFACE OF SOFT CONTACT LENSES. IT HAS ALSO ANTI-INFLAMMATORY PROPERTIES.