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Glasses made to measure... for $1
Malawi has one fully-trained optician for every million people.
It means buying glasses with the correct lenses can be difficult and expensive - but it doesn't have to be this way.
A film for ÃÛÑ¿´«Ã½ World Hacks by Lucy Ashton and Richard Kenny.
For more about this story, listen to our World Hacks podcast.
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