Some 285 million people are thought to be visually impaired across the world.
But now scientists have discovered a method for generating several key types of eye tissue from human stem cells.
They have used the finding to restore vision in rabbits and the findings offer hope that in years to come, blind people could be treated in a similar way to help them see again.
The eye is composed of highly specialised tissues that are derived from a variety of cell lineages during development.
Previous studies have shown that particular cell types, such as those that make up the retina or cornea, can be created in the laboratory from so-called pluripotent stem cells.