Fluorescein Sodium is a phthalic indicator dye. It is used therapeutically as a diagnostic aid in corneal injuries and corneal trauma.

TPCK is an irreversible inhibitor of chymotrypsin-like proteases that affect cell proliferation apoptosis and tumorigenesis.

Hyaluronic acid (HA) is an anionic nonsulfated glycosaminoglycan distributed widely throughout connective epithelial and neural tissues. It is unique among glycosaminoglycans in that it is nonsulfated forms in the plasma membrane instead of the Golgi and can be very large with its molecular weight often reaching the millions.