...hello, always interested in dry eye drops .. had condition i think 20yeas (how have glaucoma and some other issues) Am in Ontario and think over the years I have tried just about every over the counter drop, starting with those with preservatives and last five years or so, no preservatives, single dose but are a bit costly. I have never tried prescription dry eye drops but have prescription Glaucoma drops and even those have side effects. I am interested in a drop with oil.... but what I really neglected to do was really find out the cause.... as there are a few reasons like not producing enough tears, or tears evaporating etc. and the optometrist was just starting to check the little oil producing or tear producing of eyes when it was found i i had glaucoma then i got other illnesses and "REASON" for the dry eyes got left in the dust. Sometimes my eyes feel like they have been boiled in oil from all the chemicals in eyedrops ... it must be a multi million dollar business these days; daughters have them now from computer work all day. Right now am using one bought in Canada but made in German and they have a whole line of products, just over the counter; Candor Vision HYLO . it is expensive and last 6 months but very hard to put in eyes with a plunger type applicator so have to be careful. I am not suggesting anyone buy it, but many countries are trying to find dry eye solutions. The idea of a drop having oil in appeals to me... so hope to read some good news...thanks for sharing your results etc. June