Visual test of Listing's law during vergence.
A simple visual test was used to measure how much Listing's plane rotates as a function of the vergence angle. This test measured the elevation-dependent torsional disparity of horizontal and vertical lines during three tasks: vergence on a near target, vergence through prisms that remained fixed, and through prisms that rotated with eye elevation. Consistent with our previous search-coil measurements, the results here suggest that the angle between the Listing's planes of the two eyes is somewhat less than the vergence angle.
Somani
R A
RA
Neuroscience Program, University of Western Ontario, Canada.
DeSouza
J F
JF
Tweed
D
D
Vilis
T
T
D003290:Convergence, Ocular / Q000502:physiology*; D005403:Fixation, Ocular; D006801:Humans; D008297:Male; D008433:Mathematics; D012399:Rotation; D015357:Vision Disparity / Q000502:physiology; D015348:Vision, Binocular