A new donor cornea marker and punch for penetrating keratoplasty.

We describe a new device to mark and punch donor corneas for penetrating keratoplasty. The device contains eight marking-suction holes that make circular marks in the periphery of the donor cornea and fix the tissue in position during trephination. The eight peripheral marks correspond in location to meridians of an eight-blade radial keratotomy marker. When used in conjunction with this marker for the host bed, the donor cornea marker facilitates alignment of meridians on donor and host tissues, radial placement of sutures, and quantitative placement of sutures equi-distant from the wound margin.