Assessing the Frisby Stereo Test under monocular viewing conditions.

A new random dot stereoscopic test, the Frisby Stereo Test, was evaluated to determine whether monocular information may be used in making correct responses. The performance of 34 optometry students was assessed under both monocular and binocular viewing conditions. Results indicated that one student was able to pass the test upon the initial monocular presentation. Two additional students were able to pass the test monocularly following binocular exposure. It was concluded that the Frisby Stereo test is about as effective as any other commercially available RDS test when used with adults. However, it may have potential deficiencies when used with children.