What is a corneal transplant, and how is it performed?
Over the past 50 years, ophthalmologists have developed techniques to replace cloudy corneas and restore vision by performing corneal transplant surgeries. This type of surgery replaces the damaged cornea with clear corneal tissue from a human organ donor.
Full-thickness corneal transplants (for corneal clouding or scarring) are performed by removing a full-thickness, central, circular piece of the damaged cornea and sewing a replacement piece of donor tissue in its place. These kinds of grafts are called “penetrating keratoplasties” (or PKPs) because they involve replacing the entire thickness of the damaged cornea. To continue the wristwatch analogy, this would be like replacing the damaged or cracked crystal covering of your wristwatch with a clear new piece of crystal.