A color vision test (OSCAR), based on the “silent substitution” technique, was designed and a portable and easy-to-use instrument was built to carry out the test. For evaluation, a cross-validation study was conducted on a group of 118 young men screened as possible color defectives by the Ishihara test. A battery of tests was administered including color plates, a lantern test, and the Nagel anomaloscope. The results show that OSCAR can easily screen red/green anomalous and dichromatic subjects from normals and that a protan/ deutan diagnosis can be made with a reliability comparable to that of the Nagel anomaloscope but in a much shorter time. In a test carried out on a group of 150 elementary school children the OSCAR results were comparable to the Ishihara plates and the test also proved more convenient and efficient.
Received March 1, 1983; revision received July 19, 1983.
* Ph.D., Member of Faculty.
Laboratory of Medical Physics
1016 BS Amsterdam
© 1983 American Academy of Optometry