The patient is given an eye test to find out how badly their vision is affected.
During the test, they're asked to read letters or symbols from a chart.
If they have refractive error, it can then be corrected with spectacles.
We have also helped to train 733 optometrists and 437 optometric technicians, who are able to carry out sight tests, diagnose eye problems and help to treat people with low vision in some of the poorest parts of the world, who may otherwise not have access to eye healthcare.
Sightsavers’ School Health Integrated Programming (SHIP) project, which ran throughout 2016, screened schoolchildren in Cambodia, Ethiopia, Ghana and Senegal for health problems such as poor vision.
As part of the project, teachers were trained to carry out basic eye tests and refer children for further treatment. During the project, 57,400 children were screened for eye problems and 1,000 were given spectacles.
Download Sightsavers refractive error strategy (pdf) to read more about our work to treat refractive error.