2. He says his grandfather recovered his sight thanks to this device.
It’s a tiny telescope that aids macular degeneration - what happens when the central part of the retina wears out.
3. Everyone is at risk for macular degeneration as they age, but people who have a family history or who smoke are more likely to develop it.
The tiny telescope is implanted in the eye when the lens is removed. This takes the place of the individual’s own lens and stays there permanently. It doesn’t restore sight to its previous level, but allows them to recognise faces, read signs and generally see where they’re going.