We have developed a new instrument for marking and trephination of the cornea for penetrating keratoplasty surgery. The instrument is an ergonomically designed combination of a corneal marker and a trephine.
Duronio JF, O'Brien TP, Gottsch JD, for the Microsurgery Advanced Design Laboratory. A Combined Marker and Trephination Instrument for Penetrating Keratoplasty. Arch Ophthalmol. 1998;116(7):958-959. doi:10.1001/archopht.116.7.958