Abstract: The invention relates to a holding device (10) for an amnion membrane (20), wherein the amnion membrane can be mounted on the eye surface without a suture or any other securing means for medical application. For this purpose, the holding device comprises concentrically arranged rings (12, 14), wherein a first ring acting as inner ring (14) is accommodated in a receiving seat (12a) on the inner face of a second ring acting as outer ring (12), such that the two rings have a common frustoconical inner surface (12b), and wherein the amnion membrane (20) in the area of this receiving seat (12a) is clamped peripherally between the two rings (12, 14) and is arranged covering the common opening (18) of the two rings.

Abstract: The invention relates to the production of retina-specific cells from human adult bone marrow stem cells by culturing bone marrow stem cells in the presence of a differentiation medium. The invention also relates to retina-specific cells and to the use of these cells for treating diseases associated with acquired or congenital dysfunction of the retinal pigment epithelium, cells of adjacent structures of the entire retina and of the choroid coat as well as of other eye tissue.