This is not unexpected in the first few weeks (even months sometimes) after LASIK. Think of your eye like a fish. It likes water! The more lubricated, the better. There are many over the counter artificial tears products you can use. Some are viscous in a gel form that you can use at night. The best way to know which is most appropriate for you is to try. It is difficult to know if one product will help you more than another. If eye drops are not sufficient, your doctor can place a microscopic insert in the tear drainage canal to help keep your own tears on the surface of your eye for longer. This is a very simple procedure done in the office.