What is a cornea and how do cornea transplants restore sight?
The cornea is a clear dime-sized tissue that covers the front of the eye. If the cornea becomes clouded through disease or injury, vision is impaired and sometimes lost entirely.
The only substitute for a human cornea is another human cornea donated at death by someone who thus leaves a living legacy. Who can donate eyes?
Almost everyone can donate his or her eyes. Donor tissue that can’t be used for transplant can, with consent, be used for medical education and research purposes.