Enlarge Image Clear-eyed. A biosynthetic cornea, shown here 1 day after implantation (left, lines are sutures) and 2 years later, allowed nerves in the eye to regenerate over time and left the eye looking normal. Credit: Per Fagerholm and Neil Lagali At least 8 million people worldwide could see again with new corneas, the thin, clear layer of collagen and cells at the front of the eye that helps it focus. But most never get transplants. A few years ago researchers developed biosynthetic corneas and now, 2 years after implanting them into patients, they appear safe and have helped...
