Failed myopic surgery usually refers to complications after the surgery, such as overcorrection and undercorrection, which are mainly due to the faulty design of the program before the surgery. Therefore, if overcorrection occurs, the only way to improve vision is to wear glasses; undercorrection is possible to operate again. Refractive regression, that is, after the eye has been operated, myopia reappears after a period of time, this situation can also be considered for secondary surgical treatment. In addition to these cases, other more rare complications, such as infectious keratitis, can also cause vision loss, and need to be given anti-infection treatment, as long as the inflammation can be controlled normally, vision can still be normalized. Therefore, after myopic surgery, you need to go to the hospital for regular checkups, and if you experience a loss of vision again, you will need to choose a treatment plan based on the results of the checkups.