Product Description Hycosan Extra has been formulated with 0.2% Hyaluronic Acid, as a result it is four times more viscous than Hycosan Original. This increase in viscosity, which results in a subsequent increase in the duration of action, makes Hycosan Extra ideal for more severe cases of Dry Eye. The drops remain sterile for up to 6 months, and they are preservative and phosphate free. Hycosan Extra is an ideal product for the Hydrate section of the recommended eye care/treatment plan \"Heat, Cleanse, Hydrate\". Suitable For Hycosan Extra is designed for patients who have Moderate to Severe dry eyes. It has the strongest percentage of Sodium Hyaluronate (0.2%) out of the whole Hycosan range. Those who suffer from the following may find Hycosan Extra useful (if you are unsure please speak to a healthcare professional); Extremely uncomfortable and persistent Dry Eye Frequent drop use Typically long term Dry Eye Tried other products of a lower strength/severity rating without satisfactory outcomes Product Size Hycosan Extra is 7.5ml How To Use Priming the system: To prime the system remove the over cap and invert the bottle with its tip pointing down. Place two fingers on the base and your thumb on the shoulder of the bottle and press firmly on the base and release. Repeat this several times untill the first drop is released. The bottle is now primed. General use: Remove the over-cap and invert the bottle with its tip pointing down. Support the hand holding the bottle with the other hand. Hold the bottle as previously shown. With your head leaning back slightly, pull down your lower eyelid. Press the base of the bottle. This enables the bottle to release one drop into the conjunctival sac. Release and repeat for the other eye. After each application slowly close your eye to allow the fluid to spread evenly over the eye surface. The design of the COMOD valve system ensures that the size and speed of each drop are the same regardless of the pressure applied to the base of the bottle. During use please avoid any contact between the tip of the bottle and your eye or your skin. Before replacing the over-cap please ensure that the tip is dry.