A pamphlet on this subject, recently released by the Children's Bureau, U. S. Department of Health, Education, and Welfare, points out that the application of certain simple principles for increasing the accuracy of measurement could improve the methods now used for testing the vision of school children.
This conclusion is based on a study of 7 different vision-screening procedures conducted in the public schools of St. Louis in 1948-49. The report shows the degree to which the results of each screening procedure correspond with an ophthalmologist's clinical findings.