Hyaluronic acid is a mucopolysaccharide with viscoelastic properties, a component naturale of the mucin layer of the precl -ronek film. The hyaluronic acid contained in the regefluid guarantees una buona Adhesion of the tear fluid (hydrophilic) to the corneal surface (hydrophobic) and thus allows the formation of a stable tear film on the ocular surface. The patented compound with amino acids, electrolytes, trace elements, and vitamins is very close to the composition of the tear film. naturale, Creating an ideal environment for the nutrition and regeneration of corneal cells. If other topical eye treatments are used, an application interval of at least 5 minutes is required.