My mother-in-law had Lasik surgery, it left her with blurry spots in her vision...something to do with scar tissue remaining in her eye after the procedure. She doesn't seem too upset about it these days (its been a few years now), but I would think it would be a drag to go from bad vision that can be corrected with glasses to mediocre vision that you're just stuck with.

I think the big takeaway is "buyer beware". Not all Lasik doctors are created equal, choose one with a good reputation that will talk openly with you about the risks, and give you a lengthy list of references.