Fair spectacle prices

Strong prescription spectacles are much more expensive than low strength ones. People who are severly short- or long-sighted cannot function without spectacles. Often these people also need to change prescriptions more frequently than average as their vision worstens. Currently, people on benefits get help buying corrective glasses whether their vision defect is mild or severe. People in work, but on low incomes, should get the same help if they could not work without spectacles.