An experimental synthetic cornea implanted in 10 patients may be a potential alternative to cadaver corneas for curing vision loss caused by corneal inflammation and scarring.
Eye surgeons primarily use cadaver corneas for transplants, but that requires the use of anti-rejection drugs and presents a risk of infection.
There is also a shortage of donated corneas in much of the world.
Plastic corneas can be used, but they present other problems and are generally tried only when tissue transplants have failed.
More here.