AN has been created that is as strong and clear as the real thing. It could allow millions of people with damaged corneas to see.
Corneal blindness can be caused by disease, injury or infection of the eye’s clear surface. It can be cured with a transplant from a human donor, but donors are scarce. The World Health Organization estimates that 10 million people worldwide are blind because of defective corneas, yet only 100,000 receive transplants each year.
Artificial corneas made from flexible hydrogels – polymers that absorb water – are now available, but they are not…
