Journal article Open Access
Schroth, V.; Jaschinski, W.
Conclusion:The prevalence of one eye is a common phenomenon in normal binocular vision (with the amount of prevalence often being different for triangles presented in front of or behind the fixation target). In only a few subjects can prevalence be reduced with prisms. Equivalence as reported by oral description (method 1) was often not confirmed by drawing (method2 ) or by the computer-controlled alignment (method 3). As an explanation for the differences between methods1 ,2 and 3 we assumet hat the oral description of the test perception was influenced by imponderables such as the expectation on the side ofthe experimenter and/or the desire to please on the side ofthe subject. The present results do not support the prevalence test- as developed by H.-J.Haase- for the correction of associated phoria.