I have Rheumatoid Arthritis which can lead to dryness of the eyes. I did not even realize it was dryness that was causing the pain in my eyes, until I read about it being a consequence. In the mornings, my eyes would feel uncomfortable and I thought I just had sleep stuck in them, but no matter how much I rubbed, I could not dislodge the "sleep". Then, I learned that having dry eyes can cause the sensation of something being in your eye, scratching against it. Since then I started using eye drops, but found "normal" ones for "mild" dry eye inadequate and they had to be reapplied too often. Since I found Genteal, after reading about it here on Viewpoints, life is better. It is one of a select group of eye drops that I seek out. And when the "economy size" bottle is purchased, it does not cost much more than other premium drops. It is such a huge relief when I put these drops in my eyes, so cool and refreshing and its a feeling that sometimes lasts the whole day, unheard of with other "weak" products.