The corneal transplant is done to replace the ‘cornea with tissue’ from the donor. The donor of the corneal transplant is a person who has died in recent past. Did you know after a series of tests and evaluation, the tissue can be used for the surgery? Penetrating Keratoplasty is the most common form of corneal transplant. The surgery is done by removing the small round piece of the cornea and then sewing the donated tissue into the opening of the cornea. Another popular medical technique for corneal transplantation is called the Lamellar Keratoplasty where instead of removing all the layers of the cornea, only the inner or the outer layers can be treated.