Corneal Transplant

What Is Corneal Transplant?

Cornea transplant (corneal grafting) is the process by which a diseased cornea of the patient is replaced by the donated cornea graft or tissue. The surgery can be done in total with penetrating keratoplasty and also in part with lamellar keratoplasty. In this procedure, a clear healthy corneal is placed by removing the diseased opaque cornea in order to restore the lost sight by permitting the light rays to enter with the help of the clear transplanted cornea.

What is the Cornea?

An external clear covering of the eye which contains the colored pupil and the iris is termed as Cornea. If there is any damage to the cornea, then it can become swollen and can affect the smoothness and its clarity. Cornea is a very powerful refracting surface which is around 2/3rd part of the eye. It is a very essential part of the eye and is required for clear vision. It becomes a clear window to look through and its clarity is necessary for good vision. Diseases of the cornea will lead to loss of transparency, reducing the vision. The impaired functioning of the cornea can cause injury, genetic diseases, infections and malnutrition. The first line treatment comes in the form of medicine and the cornea transplant become a necessity for people losing almost 70 percent of the vision in one or both the eyes.

Types of Cornea Transplants

Penetrating (full thickness) Cornea Transplant: This kind of transplant involves transplanting all the layers of the cornea from the donor.
Lamellar Cornea Transplant: In this, the surgeon only replaces some of the layers of the cornea with the transplant.

Lamellar transplants are the most appropriate transplant when the disease process is limited to only a portion of the cornea.

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