Skip to main content

Adapted brightness differences between the two eyes

6 February 1981


A study was conducted to determine if equal photopic monocular light stimuli presented independently to the two eyes result in equal monocular brightnesses. If the ratio of the monocular stimuli needed for a brightness match exceeds the experimental uncertainty, it can be inferred that monocular brightness contributions in that individual's visual system are unequal. In the majority of subjects it was concluded that monocular brightness contributions do not differ significantly. However, two subjects were found who show small inequalities in brightness contributions. Also investigated was the relationship between ocular dominance and unequal brightness contributions. Both subjects who demonstrated inequalities were right eye dominant, and required increased luminance in the right eye to perceive a brightness match. Conclusions about the possible eye dominance relationship are tentative because of the small sample.


Files are restricted to Pacific University. Sign in to view.