A pair of spectacles can cost just $2. An eye test and fitting can take just 30 minutes.
So why are over 700 million people suffering from poor vision?
An international study by the Brien Holden Vision Institute in Australia and South Africa, and Johns Hopkins University in the US reveals that lack of access to basic optometry services is costing US$202 billion each year.
The research is published in the Bulletin of the World Health Organisation.
Also in this bulletin: