Question: what is the difference between hycosan extra and hycosan plus?
Answer: Hycosan Extra (RED) (0.2% Sodium Hyaluronate) is four times more viscous than Hycosan, and so ideal for more moderate to severe Dry Eye. ... Hycosan Plus (Light Green) (0.1% Sodium Hyaluronate & 2% Dexpanthenol) is an ideal lubricant when corneal damage has occurred due to severe Dry Eye, Corneal Abrasions or Post Surgery.