Based on the available preclinical studies lubricin may be an important barrier to the development of corneal and conjunctival epitheliopathies in dry eyes and its use as a novel lubricating and anti-adhesive eye drop is under investigation in this clinical investigation. A clinical investigation is currently ongoing to demonstrate that a Lubricin 150 µg/ml eye drop formulation is non-inferior to an ocular surface lubricant sodium hyaluronate 0.13%.