The narrowing choice of keratoprostheses

There is a narrowing choice of keratoprostheses. The mainstream KPros include the age old osteo‐odonto‐keratoprosthesis (OOKP) which is capable of withstanding a hostile, dry ocular environment. Its derivatives (OOKP allograft, tibial bone KPro, Pintucci KPro, HAKPro) can be used when there is no suitable single rooted tooth available, but they do not match the longevity of the OOKP. For the wet blinking eye, it looks as though the Boston Type 1 KPro is favoured over the AlphaCor as the former gives much better vision and is no longer associated with corneal melts. Many “new” devices have failed the test of time. Yet others such as the Keralia are not yet established. The author surveys the changing scene in the world of KPros.