Hi, has anyone used the viva drops, from what I've read they are preservative free, and contain vit A. I'm willing to try anything at this point. I have noticed one strange thing though, I cant seem to use the liquid gel drops this is odd to me, because I can use the genteel gel with little problem(except blurring) I thought the gel drops would be great and longer lasting, I have tried the genteel ones and they feel almost like they are drying out my eyes more, I just bought the single use theratears, as I have great luck with the regular drops, and same thing, just curious if anyone else has this problem?