White coloration at the corneal transplant suture line is most often seen as a result of the normal healing process, but can also be caused by corneal inflammation. After corneal transplantation, corneal scarring can occur after wound healing at the corneal suture line, manifesting itself as grayish-white corneal clouding, and patients usually experience no discomfort. If the corneal whitening is stable and does not change significantly over time, the patient can be followed for observation and does not require special treatment. In a few patients, the whitening of the corneal suture line is caused by postoperative local infection, which can be manifested as a grayish-white corneal infiltration, and may be accompanied by tearing, photophobia, foreign body sensation and other uncomfortable symptoms. As the disease progresses, the white area of the cornea may gradually become larger and more cloudy. Patients can follow the doctor’s instructions to use tobramycin eye drops and other drugs to control inflammation and promote recovery. It is recommended that patients with obvious corneal clouding should consult a doctor to identify the cause and choose the appropriate treatment.