Those who have had a femtosecond can usually still have a lens implanted, but this is analyzed on an individual patient basis. If you have simply had a failed femtosecond surgery and are experiencing symptoms such as low vision and blurred vision, you can have a crystal implanted, which can make up for the faults of the femtosecond surgery, thus improving low vision and other problems. The procedure is relatively simple and does not harm the cornea during the operation. However, if the femtosecond surgery is more traumatic and the cornea has been seriously damaged after the surgery, it is not recommended to implant crystals within a short period of time, and it is necessary to wait for a period of time to wait for the trauma to be fully recovered before implanting crystals, or else glaucoma, cataract and other conditions may be caused. It is recommended to go to a regular hospital for examination and surgery.