Hello! It is vital to know that there could be many reasons for your blurry vision. The chances of a flap dislocation are a little low after 2 years, but yes, it is a possibility. There could also be a corneal injury leading to corneal oedema which can cause blurriness of vision. Retinal Oedema (swelling of the light sensitive portion at the back of the eye) could be another cause. It is extremely important that you get yourself checked by an eye doctor to rule out any major issues.
It is important to be seen ASAP. You will get epithelial ingrowth if the flap is dislocated.
Dr. O.