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Using a new temporary keratoprosthesis in an eye with an opaque cornea and a proliferative vitreoretinopathy, a pars plana vitrectomy combined with a silicone oil injection was successfully performed. The new keratoprosthesis is made of silicone rubber and is fixed to the threphined corneal bed with four 10–0 nylon sutures. It permits an excellent view of the intraocular structures and allows vitreoretinal surgery even in the region of the pars plana and vitreous base. It is replaced by a corneal graft at the end of the vitrectomy.