A double cornea lightens the lives of 4 people

The colorless, dome-shaped tissue at the front of the eyeball is called the cornea. The cornea, which is the connection between the outside world and the eye, is the area where the light necessary for the perception of the image is first transmitted to the eye and refracted. Although much of society thinks of horn transplantation as a ‘full eye transplant’, in fact only the transparent layer in the cadaver’s eye is transplanted to patients waiting for organs. Loss of tissue or function in the cornea due to many reasons, such as keratoconus, a deformity caused by congenital or subsequent outward curvature of the cornea, some diseases in which the congenital corneal structure is damaged, thinning or tearing of the corneal tissue, damage to the cornea as due to factors such as infection, physical trauma There is no option other than corneal transplantation for the treatment of visual disturbances or even complete loss of vision after surgery. Başakşehir Çam and Sakura City Hospital Eye Clinic Manager Assoc. Dr. Yusuf Yıldırım pointed out that millions of patients in the world and thousands of patients in our country are waiting for corneal transplantation and said that the method known as “layered corneal transplantation” is very important because it gives more patients a chance to heal. gave important information about the transplant they performed on two patients of a single cornea.


Explaining that full-thickness corneal grafting is usually performed in cases with traumatized corneal incisions, Assoc. Dr. Yıldırım emphasized that corneal transplantation is not an “eye transplant” as people think, and said: “We can only define it as the change of the transparent layer, which we call the cornea. Recently, in two different patients, we can see the cornea of ​​only evaluate one eye of a cadaver. We transplant only the anterior part of the cornea, from the donor, in the form of membranes, to diseases with a damaged anterior cornea. Again, we can replace the 15 micron membrane in the posterior part of the use cornea for damage in the posterior part of the cornea In other words we can be a hope and a light for 4 patients out of two corneas from a cadaver In this method which we call lamellar corneal surgery we can make the process of transferring the layers separately, especially in diseases involving the innermost layer of the cornea, which we call endothelium. Again, in keratoconus patients, the anterior aspect of the cornea has deteriorated. In these patients we only replace the anterior side. In case of previous infection, if the back part of the transparent layer of the eye, which we call the cornea, is not involved, if there is a problem only in the front, we can apply lamellar keratoplasty techniques in the same way. With this method, the healing process is faster compared to a full corneal transplant. The risk of organ rejection is also much smaller. It is very important to choose the right patient for this,” he said.


Note that this method cannot be applied to problems involving all layers of the cornea, Assoc. Dr. Yıldırım said, “Then it is necessary to perform the transplants that we call full-thickness corneal transplants. We have no age limit for corneal transplantation, but we do not prefer it during childhood because of the difficulties. In general, corneal transplants and lamellar keratoplasties can be safely performed from childhood through young adulthood and into old age. One of our patients, Nadide Hanım, is one of the people with whom we apply this method. After surgery, he had a problem in the posterior part of his cornea and severe vision loss in his left eye. We transplanted the posterior part of the cornea from a cadaver donor. On the same day, we transplanted the anterior part of the cornea to our young patient with keratoconus. So by using a cadaver horn, we enabled 2 of our patients to see.”


Nadide Sezen, 68, who lives in Çanakkale, started to lose sight in her left eye after an operation she underwent last year. Sezen, who was found to have damage to her cornea, was told she needed a corneal transplant. Sezen, who came to Istanbul, regained her sight with a half-hour operation. Sezen said, “Of course I was scared when they first said it. We thought my vision would change completely. But then we came, thanks to my teacher Yusuf, and 45 minutes later I came out of the operation, he took my tape, 2 hours later I began to see. When I returned to my hometown, my neighbors and visitors thought my eye had completely changed, and some people asked how they found the same eye color. We also told them that a corneal transplant is not an eye transplant, that a layer of the top is changed. One can’t know how important organ donation is until it happens to them and they experience it.” 22-year-old Emrican Keskin explained that within a year he had vision loss in his right eye due to keratoconus, saying: “Because there was no vision on my right side I always felt empty. I tried to maintain it with my left side. “My life. Different techniques were tried, lenses were tried, we tried to find a solution without surgery, but it didn’t work. A corneal transplant was done in March. I see much better now. At least I don’t have balance problems anymore,” he said .

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