Cataract and Fuchs Endothelial Corneal Dystrophy

The purpose of the study is to investigate whether there is a difference in BCVA in patients who receive one of the following two surgeries: intervention group (arm 1) cataract surgery alone and control group (arm 2) cataract surgery combined with removal of the diseased endothelial cells and the attached Descemet's membrane followed by transplantation of a healthy endothelial cell layer with attached Descemet's membrane ("triple-DMEK" group; comparator therapy). The secondary objectives are to compare the two surgical methods with regard to other visual functions and optical as well as morphological differences, to safety, to quality of life, and to safety.