You may
have a condition that has affected your cornea (the front part
of your eye). If your doctor has determined that you need a
corneal transplant several options are present. Transplant
surgery replaces your cornea with a cornea that has been
removed from someone who died. The cornea you will receive is
referred to as the donor cornea. The donor cornea to be used
for your transplant will be provided by an Eye Bank. Your
corneal surgeon may have determined that you are eligible to
receive the Deep Lamellar Endothelial Keratoplasty.
Only one part of
your cornea is not working properly. The endothelium layer of
your cornea is failing and is causing your cornea to become
swollen. The endothelium is the layer of cells on the inside
surface of your cornea It is this layer that needs to be
replaced. Until recently, the only way to replace that layer
of cells was with a full thickness corneal
transplant.
A split
thickness transplant is called a lamellar transplant. This
surgery uses a lamellar transplant to replace only the
diseased tissue and leave the rest of your cornea intact. In
addition, a smaller incision will be used compared to previous
DLEK surgeries.
During
the surgery a single line incision with a length of only 5 mm
is made in the upper sclera (the white part of the eye), a
pocket is formed, and the diseased endothelial layer and back
surface layer of your cornea will be removed. The donor
endothelium and back layer of the donor cornea is then placed
through the incision and pocket and placed into position on
the back surface of your cornea to replace the diseased tissue
which was removed. The initial incision is then closed with
one to three small sutures and the procedure is
completed.