It is normal to feel a foreign body sensation for a short period of time after femtosecond myopia surgery. If the sensation persists after a few days, you will need to go to the hospital for a checkup. Femtosecond myopia surgery is a more advanced myopia treatment option performed with a femtosecond laser. The surgery is performed by cutting the stroma layer of the cornea with a femtosecond laser, changing the thickness of the cornea as well as the radius of curvature, thus altering the refractive state of the eye to correct myopia. In the early days after femtosecond surgery, you may experience a foreign body sensation on the same day, which is a normal phenomenon. This is because during femtosecond surgery, a corneal incision is made in the eye, and it is normal to experience tearing, fear of light, and a foreign body sensation as the incision heals over the course of a few hours after surgery. Everyone’s eye sensitivity is also different, eye sensitivity is strong will feel foreign body sensation is stronger, strictly follow the doctor’s instructions for medication, and follow the doctor’s instructions for postoperative care, foreign body sensation will gradually disappear. If the foreign body sensation continues after a few days, it may be a not so good phenomenon, and you need to go to the hospital in time for further examination. To have femtosecond myopia surgery, you should choose a regular hospital and follow the doctor’s instructions on medication and eye care after surgery. If you feel uncomfortable, you should communicate with your attending physician in a timely manner.