April, 2017 – In the early days of endothelial transplants, making a graft for Descemet stripping automated endothelial keratoplasty (DSAEK) required an equipment investment that was too large for most individual surgeons. The grafts also took hours to prepare. Eye banks therefore began preparing the tissue, and these institutions continued to provide prepared tissue as many of us surgeons went on to embrace Descemet membrane endothelial keratoplasty (DMEK)