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The second type, called Descemet membrane endothelial keratoplasty (DMEK), uses a much thinner layer of donor tissue. The first type, called Descemet stripping endothelial keratoplasty (DSEK), uses donor tissue to replace about one-third of the cornea. There are two types of endothelial keratoplasty.
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Donor tissue replaces the removed tissue. These procedures remove diseased tissue from the back corneal layers, including the endothelium and a thin layer of tissue that protects the endothelium from injury and infection (Descemet membrane). The stitches might be removed at a later visit with your eye doctor.Įndothelial keratoplasty (EK). Your surgeon then uses stitches (sutures) to stitch the new cornea into 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 abnormal or diseased cornea to remove a small button-sized disk of corneal tissue. Penetrating keratoplasty (PK) a full-thickness cornea transplant. Your cornea surgeon will decide which method to use. Procedures to transplant a portion of the corneaĪ cornea transplant removes either the entire thickness or 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 with organs such as livers and kidneys, people needing cornea transplants don't require tissue matching. Corneas are not used from people who died from unknown causes or from donors who had certain conditions, such as diseases that can spread, previous eye surgery or eye disease. Your eye doctor will treat those problems before your surgery.Ĭorneas used in cornea transplants come from people who have died. Unrelated eye problems, such as infection or inflammation, 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.
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Rejection occurs in about 10% of cornea transplants. Make an urgent appointment with your eye doctor if you notice signs and symptoms of rejection, such as: This is called rejection, and it might require medical treatment or another cornea transplant. Your body's immune system can mistakenly attack the donor cornea. Retinal problems, such as retinal detachment or swelling.Problems with the stitches used to secure the donor cornea.Pressure increase within the eyeball (glaucoma).Still, it does carry a small risk of serious complications, such as: This is why it is critical for patients with Fuchs dystrophy to receive care at cornea specialty centers with a long history of success with DMEK, before proceeding with care.Request an Appointment at Mayo Clinic RisksĬornea transplant is relatively safe. However, in the United States, DSAEK is still more commonly performed by doctors, because DMEK is a much more technically difficult operation, for the surgeon. It is specifically designed to be less invasive and to provide faster recovery, better vision, reduced need for postoperative eyedrops, and lower risk of complications.ĭMEK is currently recognized as the superior surgical technique for most patients.
CORNEA MISSHAPEN UPGRADE
CORNEA MISSHAPEN FULL
DSAEK: This surgery was invented in 1998 in Holland and proved, for the first time, that it was technically possible to replace only the patient’s dysfunctional endothelium, without performing a full corneal transplant.There are two strategies to achieve this goal, represented by two different surgeries. Today, the endothelial layer of the cornea can be selectively replaced. Fuchs dystrophy is now effectively curable, thanks to modern advances in corneal surgery.