The cornea is the clear, outer layer at the front of the eyeball. It acts as a window to the eye. The cornea helps to focus light rays onto the retina, this image is then transmitted to the brain. When the cornea is damaged, it can become less transparent or its shape can change. This can prevent light reaching the retina and causes the picture transmitted to the brain to be distorted or unclear. A corneal transplant, also known as keratoplasty or a corneal graft, is an operation to remove all or part of a damaged cornea and replace it with healthy donor tissue. It is used to improve sight, relieve pain and treat severe infection or damage. One of the most common reasons for a cornea transplant is a condition called keratoconus, which causes the cornea to change shape. (NHS.UK) This book is a guide to corneal transplantation (keratoplasty) for ophthalmic surgeons. Divided into seven sections, the text begins with an overview of evolution, preoperative considerations, and eye banking. The following sections cover a multitude of keratoplasty techniques, including endothelial keratoplasty, and their potential complications. The book concludes with discussion on alternatives to corneal transplantation. The third edition of this comprehensive manual has been fully revised, with new topics added, to provide surgeons with the latest advances in the field.