Corneal transplant surgery is a medical procedure used to restore the vision of individuals with keratoconus or other corneal diseases that have caused significant damage to the cornea. The cornea is the dome-like structure at the front of the eye that works to focus light on the retina. When it is misshapen or scarred, patients can suffer from significant vision difficulties. The corneal transplantation procedure uses donor tissue to replace the damaged cornea and restore the patient’s sight and quality of life.
Corneal Transplant Types
Several different methods can be used to perform the corneal transplantation procedure. The choice of method is made based on the type and severity of damage the patient’s cornea has suffered. Here’s a closer look at different types of corneal transplants:- Penetrating Keratoplasty – This procedure is also called a full thickness corneal transplant, meaning all layers of the cornea are replaced with a new donor cornea. It is mainly for those with significant bulging and scarring and is associated with the longest recovery time.
- Deep Anterior Lamellar Keratoplasty – Sometimes called a partial thickness corneal transplant, this process only removes and replaces the outside and middle layers of the cornea. Because it does not go as deep into the eye, it has a lower risk of complications and faster healing.
- Endothelial Keratoplasty – There are two variations of endothelial keratoplasty: Descemet’s stripping endothelial keratoplasty and Descemet’s membrane endothelial keratoplasty. These surgeries target very thin, specific layers within the cornea, either the endothelium, Descemet’s membrane and stroma, or just the endothelium and Descemet’s membrane.