The preoperative evaluation of your ocular surface by your surgeon is critical to the process of deciding whether or not lasik is the right procedure for you. Although it isn't rare to have some dry eye symptoms in the first few days to weeks after lasik, most patients have a completely uncomplicated course. 90% of patients that get dry eyes from lasik resolve in the first 3 months. An even smaller percentage remain with dry eye disease beyond 6 months, with improvements still being seen at the 1 year mark. Patients that do poorly have some level of dry eye identified BEFORE surgery or they are at higher risk to develop it (ie doing lasik on a 50 year old female is typically not the same as a 21 year old, for numerous reasons). As far as which procedure produces more dry eye, PRK vs LASIK, we now know from very large-scale retrospective reports that both procedures are essentially the same. Some very high treatments (farsighted or nearsighted) may increase your risk as well. The more educated you are as a patient going into the surgery the better, because these sort of discussions should be tailored to your particular eyes. - Lee Katzman MD