Blurry vision can be caused by many different reasons
You did not mention how long after surgery the vision is blurry, whether is was clear and now has become blurry, whether it is clear with corrective lenses, and whether it is clear or blurry at distance or at near. It also depends on what type of procedure you had and how bad your eyes were before the procedure.
If you are only a short time (days to weeks) past your procedure, this may be a normal healing response. It also may be from something simple like dryness of the surface, or...