DMEK is an endothelial graft containing only the delicate Descemet’s membrane and endothelium. DMEK is the newest method of surgery, which gives excellent rapid restoration of vision. However it can be associated with a higher rate of dislocation, necessitating more than one operation.
The benefits of DSAEK or DMEK are a smaller operation for the eye compared to a penetrating graft, as the surgery is carried out through a keyhole incision, and requires only a few stitches to close the wound. This leaves the eye much stronger than after a penetrating graft, and also eliminates the problems of regular and irregular astigmatism that accompany all penetrating grafts. This speeds up the recovery period.
Following DSAEK or DMEK surgery, vision meeting the licensing standard for driving or better (a Snellen acuity of 6/12 plus) is achievable with glasses for the average patient.