Hello, I had lasik surgery last year, in october 2004. Since then I've had no problem with my left eye but I can't say the same about the other one. First it hurted a bit and the dr said that I had a little 'dry spot' and that I needed more lubrication, by that time I was using Tears Naturale, I realized that when I stopped using the drops my eye feeled better. Besides I was told that TearsNaturale had preservatives and that was not good for my eye, my Dr never said so... Then I changed to Nicotears, it was really better by then. Now I'm using SYSTANE and problems are back, I don't know if its because of the drops or what can it be, I cant see very well with that eye, sometimes I see double pictures and others the image is difused. What do you think it can be? Do I need to change the medication? I told that to my Doctor and he respond that I needed more lubrication, without seeing me...