Failed corneal transplants do not necessarily mean complete blindness, and there is still a chance for another surgery. Corneal transplantation is a common surgical procedure used in ophthalmology to treat diseases such as corneal leukoplakia and corneal ulcers. After corneal transplantation, there is a possibility that the corneal implant may lose its transparency due to rejection, recurrence of infection, etc., which may lead to the failure of the surgery, and the patient’s vision will be significantly reduced. This does not mean that the patient will be completely blind in the future, and he or she can still strive to regain his or her vision by undergoing another corneal transplantation. After corneal transplantation, patients can use hormone eye drops to inhibit the occurrence of rejection under the guidance of the doctor, such as commonly used prednisolone acetate eye drops, fluticasone eye drops and so on.