![]() This operation is known as keratoprosthesis. If you aren't eligible for a cornea transplant with a donor cornea, you might receive an artificial cornea. Healthy tissue from a donor is then attached to replace the removed portion of the cornea. This leaves the healthy stroma and endothelium intact.Ī deep anterior lamellar keratoplasty (DALK) operation is used when cornea damage extends deeper into the stroma. Superficial anterior lamellar keratoplasty (SALK) replaces only the front layers of the cornea. The depth of cornea damage determines the type of ALK operation that's right for you. However, they leave the back endothelial layer in place. Two different methods remove diseased tissue from the front corneal layers, including the epithelium and the stroma. This operation is more challenging than DSEK but is commonly used.Īnterior lamellar keratoplasty (ALK). The tissue used in DMEK is extremely thin and fragile. The second type of operation, called Descemet membrane endothelial keratoplasty (DMEK), uses a much thinner layer of donor tissue. The first type of operation, called Descemet stripping endothelial keratoplasty (DSEK), uses donor tissue to replace up to one-third of the cornea. Donor tissue replaces the removed tissue. The layers include the endothelium and a layer of tissue called the Descemet membrane, which is attached to the endothelium. These operations remove diseased tissue from the back corneal layers. There are two types of endothelial keratoplasty. The stitches might be removed at a later visit with your eye doctor.Įndothelial keratoplasty. Your surgeon then uses stitches, also called sutures, to keep the new cornea in place. The donor cornea, cut to fit, is placed in the opening. ![]() A special instrument is used to make this precise circular cut. Your surgeon cuts through the entire thickness of the irregular or diseased cornea to remove a small button-sized disk of corneal tissue. This operation involves a full-thickness cornea transplant. Your cornea surgeon will decide which method to use. Operations to transplant a portion of the corneaĪ cornea transplant removes either the entire thickness or the partial thickness of the diseased cornea and replaces it with healthy donor tissue. In the United States, donor corneas are widely available, so there's usually not a long waiting list. Unlike people who need organs such as livers and kidneys, people needing cornea transplants don't require tissue matching. Corneas from people who had previous eye surgery, eye disease or certain conditions, such as diseases that are passed from one person to the next, also are not used. Corneas from people who died from unknown causes are not used. Your eye doctor will treat those problems before your surgery.Ĭorneas used in transplants come from people who have died. Unrelated eye problems, such as infection or swelling, can reduce your chances of a successful cornea transplant. You may need to stop taking certain medications or supplements before or after your cornea transplant. A review of all medications and supplements you're taking.Your eye doctor determines what size donor cornea you need. Your eye doctor looks for conditions that might cause complications after surgery. How you prepareīefore cornea transplant surgery, you will undergo: Rejection occurs in about 10% of cornea transplants. ![]() Make an urgent appointment with your eye doctor if you notice symptoms of rejection, such as: Rejection might require medical treatment or another cornea transplant. The body's immune system can mistakenly attack the donor cornea.
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