Full femtosecond generally refers to full femtosecond laser surgery, full femtosecond laser surgery after the first day of vision 0.8 most normal, after the operation need to comply with the doctor’s instructions to do a good job of care, to promote the return to normal vision. Under normal circumstances, the vision after full femtosecond laser surgery can reach the best corrected visual acuity with glasses before surgery. If the best-corrected visual acuity is 0.8 before surgery, the visual acuity after surgery can only reach 0.8. If the best-corrected visual acuity with lenses before surgery can reach 1.0 and above, the reason for the visual acuity of 0.8 on the first day after surgery may be that the corneal flap has not fully recovered to normal, or the cornea is cloudy or edematous after surgery. After the surgery, if you follow the doctor’s instructions and take good care of yourself, the corneal flap will slowly return to normal, and your visual acuity will be restored to 1.0 or above. It is recommended that patients should choose regular hospitals for full femtosecond laser surgery, follow the doctor’s instructions for postoperative care, and undergo regular checkups to see how their vision is recovering.