As we get older, the lenses in our eyes can become cloudy - a Cataract.
The Cataract disperses the light, so the image on the back of the eye is no longer sharp.
A special tool can be inserted into the lens 'sack' ...
... and the cloudy lens removed.
A new plastic lens with special springs is made.
This is inserted into the tool ...
... and then placed in the lens sack, where it opens into position.
This will significantly improve the sight in the eye.