Severe Dry Eye Relief. Sterile. Preservatives free in the eye with GenAqua. Severe Dry Eye Sufferers May Experience: Pain Persistent redness Blurred vision severe itching Frequent mucous discharge. GenTeal Gel is a clear lubricant eye gel that liquifies upon contact with your eye, forming a non-blurring, protective film. Long-lasting GenTeal Gel contains GenAqua, a disappearing preservative that turns into pure water and oxygen upon contact with your eye. With GenTeal Gel, you only need 1 to 2 applications per day to ensure comfort all day and all night long.