1 months post op epi lasik, I notice I'm having double vision. Is this normal?

Epi LASIK is really just another form of PRK. These procedures can take longer to heal and can be associated with quality of vision issues such as you are experiencing. It is much to early to blame your symptoms on the residual astigmatism that has been described. An additional month of healing should eliminate your symptoms as the surface of your cornea gradually heals and remodels itself.

One month after a surface ablation
such as epi-LASIK your eyes will still be healing. Double vision may well go away as your eyes continue to
heal. Often it can take up to six
months for full visual stabilization.
Once your eyes have stabilized, if you are still noticing double vision
and have astigmatism (or residual nearsightedness or farsightedness), this can
often be treated with a touch-up or enhancement surgery.