[Osteo-keramo-keratoprosthesis (author's transl)].

A high percentage of plastic keratoprosthesis is rejected again or intraocular infections occur because there is a cleft-like open junction between anterior chamber and lacrimal film. Only the ketratoprosthesis by Strampelli (1970) settles firmly in the cornea without the above risks, because the autogenous transplanted bone unites well with the grafted labial mucosa. 5 years of investigation have confirmed that glass ceramic Ceravital unites firmly with bones (Blencke et al. 1973, Strunz et al. 1977c, Bunte et al. 1977). For the osteo-keramo-keratoprosthesis Ceravital is used the same location as Dentin for the osteo-odonto-keratoprosthesis. The new surgical method has the advantage that 1. toothless patients can be operated, 2. the anterior chamber cannot flatten because the ceramic disk has the same shape as the corneal surface, and 3. broader optical cylinders can be used, by which a widening of the visual field is achieved.