I did lasik 1 week ago everything was ok until yesterday i feel like in my left eye there is a eyelash can a lotemax (loteprednol) eye drops cause that feeling?

Not as likely : Since your LASIK procedure is recent, the incision is still healing. A sensation that there is something in the eye may be superficially related to dryness or medication, but may also be due to the LASIK flap edge. I recommend calling your LASIK surgeon to discuss what you should do. He will likely see you and carefully determine the cause of your symptoms. In the meantime, use nonpreserved tears.