If your blurry vision is form something related to the previous surgery, it may be possible to do a repeat LASIK or a surface treatment to improve your vision. It is difficult in a short answer to cover all of the possibilities, but you should get an evaluation to find out if this is possible. There is a chance that the problem stems from an internal eye problem unrelated to your LASIK, or your corneas might be too thin to be able to withstand additional surgery.
Many times though, it is possible to retreat undercorrected eyes. If there was a decentered ablation, then newer treatments coming onboard in the next few years will be able to help. In some cases existing custom treatments can help. We also see patients who have dry eye issues where a relatively simple fix such as punctal plugs can help quite a bit also.
