Gylan® Extra is a sterile ophthalmic solution without preservatives that contains trehalose 30 mg/mL (3%) and sodium hyaluronate 1.8 mg/mL (0.18%). Trehalose has physical and chemical characteristics that provide protective, antioxidant and moisturizing properties. For these reasons, it is an important element in the anhydrobiotic mechanism observed in certain microorganisms (a state of slow metabolism that allows them to survive under dehydration conditions). Trehalose has protective and stabilizing properties in relation to cell membranes, preventing protein denaturation and lipid degradation, and it also exhibits antioxidant functions. Trehalose is a naturally occurring substance found in many animals and plants that can survive in extremely dry conditions. Sodium hyaluronate is highly purified, produced by bacterial fermentation. Sodium hyaluronate is a physiological polysaccharide compound contained in both eye tissues and other tissues and fluids of the human body.
A special physical and chemical property of sodium hyaluronate molecules is their pronounced ability to bind water molecules.
Thanks to the combination of trehalose and sodium hyaluronate, Gylan® Extra protects, moisturizes and lubricates the ocular surfaces for a long time and quickly gives a feeling of comfort.
The content of trehalose and sodium hyaluronate in Gylan® Extra gives a double moisturizing of the ocular surfaces.
When applying Gylan® Extra ophthalmic solution, a thin uniform film is formed on the epithelium of the cornea, protecting the eye from overdrying, irritation and development of inflammation of the eyeball anterior surface. The protective film action begins instantly, thus the eyes are protected for a long time from the sensation of dryness, sandpaper in the eyes, foreign body sensation, irritation, which often occur when working at a computer, with prolonged use of air conditioners or other office equipment, in cases of environmental degradation. The pre-corneal tear film formed after instillation is retained for a long period of time, is not washed away when blinking and does not cause a decrement in visual acuity.
Gylan® Extra effectively and quickly relieves symptoms of dry eye syndrome: eliminates the foreign body sensation, burning sensation, sandpaper in the eyes, helps to relieve fatigue during intensive visual load, eliminates discomfort, maintains a healthy eye condition.
When wearing contact lenses systematically, it is recommended to use Gylan® Extra ophthalmic solution, which promotes long-term moisturizing of the eye, as its action is identical to the natural lachrymal fluid. The solution has a viscosity index of 2.0 – 25.0 mPa.s. Gylan® Extra solution makes wearing hard or soft contact lenses more comfortable, while the solution does not settle on the lens surface.
Gylan® Extra ophthalmic solution does not contain preservatives, so there is no undesirable toxic effect on eye tissues, it is well tolerated even with prolonged use.
Thanks to a special drop dispenser the solution remains sterile during the entire shelf life after opening the bottle. Sterility of the solution after opening the bottle is due to the drop dispenser design – the presence of a special spring, which prevents the return of the solution to the bottle with the remaining solution after instillation, thus eliminating the contact of the solution in the bottle with the solution that got into the external environment and the presence of sterilizing multilayer filter membrane in the air channel of the drop dispenser.