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Penetrating keratoplasty (PK)

A trephine (a circular cutting device) is used by the surgeon to cut the donor cornea, which removes a circular disc of cornea. A second trephine is then used to remove a similar sized portion of the patient s cornea. The donor tissue is then sewn in place with sutures. Antibiotic eyedrops placed, the eye is patched, and the patient is taken to a recovery area while the effects of the anesthesia wear off. The patient typically goes home following this and sees the doctor the following day for the first post operative appointment.