I don't know that there is a medical marketplace so oversaturated and underperforming as artificial tears. Just ask 10 people who complain that their eyes are red or burning or dry what eye drops they are using and the variety of answers is astounding.  Depending on the OTC drops you purchase, you may be experiencing really poor relief of your dry eye symptoms,...

Is there anything more overwhelming than the artificial tear aisle at your drug store or pharmacy?  Take 10 minutes and stake it out if you are curious.  You will see poor lost souls wander up and down in frustration, comparing bottle labels that could be written in a foreign language for all they tell you, and then landing on the familiar: Visine.  Oh...