A Surgical Cryoprobe for Targeted Transcorneal Freezing and Endothelial Cell Removal

Figure 1

The transcorneal freezing machine attached to a cylinder of medical grade nitrous oxide (the cryogen), which comprises a main console with a monitor screen that illustrates freeze time, cryogen levels, and readiness for freeze plus interchangeable probe tips and a footswitch (not shown). Inset: the 3.4 mm diameter concave probe tip manufactured from silver for high thermal conductivity.