Many different disorders can affect the cornea, the clear outer covering over the iris.
When corneal clarity is significantly diminished or a disease process becomes severe, corneal transplantation can bring new life to the diseased eye. Like kidney and liver transplants, the donor corneal tissue comes from individuals who die and donate their organs for the benefit of others. Organ donation is extremely important. It saves lives and restores sight to others. Unlike kidney and liver transplants, the corneal graft need not go through an extensive typing procedure in order to match donor and host.