[Current researches in keratoprosthesis].

This paper introduced the evolution of keratoprosthesis (KPs) from the earliest devices to the newly developed types, pointed out their drawbacks and discussed the properties that an ideal keratoprosthesis or a tissue engineering keratoprosthesis must possess. Recent researches focused on the use of porous polymers as the skirt of core-skirt keratoprosthesis and tried to improve the material's biologicial intergration.