New hycosan extra is a convenient and extra long lasting eye drops that provide daily eye comfort for more severe cases of dry eye it contains 02 hyaluronic acid is preservative free and can be used with all types of contact lenses still presented in the unique patented delivery system hycosan extra is the latest addition to the hycosan range of products multi dose eye drops provide long lasting comfort and relief from eye discomfort of non medical origin without the use of preservatives