Scope hycosan extra eye drops 02 sodium hyaluronate is four times more viscous than hycosan original and so ideal for more moderate to severe dry eye scope hycosan extra eye drops has been formulated with 02 sodium hyaluronate that gives a solution which is four times more viscous but still causes minimal blurring of vision this increase in viscosity which allows a subsequent increase in duration of action making it ideal for more severe cases of dry eye scope hycosan extra