[johnmales]

Existing artificial corneas have great difficulties with biocompatibility and more critically stability of the interface between the implant and the host eye tissues. Currently donor corneas are a much better option for most where this is available.

If they can crack the issues this will make a difference, but they are not easy issues to solve. Corneal blindness is important cause of blindness worldwide, with a lot of the burden in places where corneal transplants are not available or not practical.