Use of a silicone shield to protect the optical cylinder following osteo- and osteo-odonto-keratoprosthesis (O/OKP) procedures.

Placing a protective silicone shield on the optical cylinder of an O/OKP can prevent permanent abrasions and, in an already scratched polymethyl methacrylate (PMMA) optic cylinder, improve vision by smoothing the surface. This intervention can be clinically significant, considering that the optical cylinder cannot be removed after implantation.