My doctor told me to use these drops after receiving LASIK. They really are high performance and keep my eyes hydrated and comfortable all day long. I've read that most people experience itchy, dry eyes or get the feeling that something is in their eye after LASIK. However, I have not experienced any of that and I think it's due to my use of these eye drops. I have noticed that if I only use the drops once a day (my dr said to use at least 4x/day) then my eyes will burn the next time I use the drops. But that is more from me just not following directions and letting my eyes dry out than it is from the drops. The drops are really easy to use and give my eyes a soothing and cooling feeling. I had my LASIK done in February and so have been using these drops for the past three months and may even have to use them for the next year. I have no complaints, however, since they work very well and do soothe my eyes.