Evolve HA is an eye drop containing sodium hyaluronate in a 10ml preservative-free multi dose bottle. The Evolve system has been designed to combine the benefits of unit dose preservative-free eye drops with the convenience of a standard eye drop bottle. Evolve HA are soothing eye drops intended for use in the relief of discomfort that arises from dry eye sensations. They provide soothing relief for sore eyes from grit, itchiness and other foreign body irritations. Dry eye sensations may also be produced by use of TVs and computer screens, infrequent blinking, certain medical treatments including refractive laser eye surgery, atmospheric pollution and drying atmospheres e.g. air conditioning, central heating, wind and sun. Evolve HA is compatible with all contact lenses.