Revista Panamericana de Salud Pública
On-line version ISSN 1680-5348Print version ISSN 1020-4989
KEEFFE, J. E.; LOVIE-KITCHIN, J. E.; MACLEAN, H. and TAYLOR, H. R.. A simplified screening test for identifying people with low vision in developing countries. Rev Panam Salud Publica [online]. 1998, vol.3, n.4, pp.220-223. ISSN 1680-5348. http://dx.doi.org/10.1590/S1020-49891998000400002.
Simple but effective tests have been produced for screening subjects with low vision in developing countries. These tests of distance and near vision, based on the E test, were evaluated and validated in trials with people aged 490 years, and have been field tested in the health, education and rehabilitation services in 32 developing countries. Their sensitivity and specificity as screening tools for low vision have been calculated: sensitivity of 85% and specificity of 96% for the distance vision test, and sensitivity of 100% and specificity of 84% for the near vision test. The content and format of the tests have been demonstrated to be appropriate for developing countries, and their effectiveness for screening for low vision has been confirmed.