December Archives: A study analyzed DMEK (DMEK involves only Descemet’s and endothelium with no stroma at all). The researchers found that a higher proportion of patients reached 20/25 or better (80%) than that reported in the literature for DSAEK. This makes sense, as the lack of stroma would seem to create a smoother interface. This surgery looks pretty hard, and is still not performed by too many cornea surgeons, but I suspect this will change as younger cornea fellows graduate.