Abstract：
:We evaluated the relative orientations of the displacement planes of the two eyes under various conditions: fixations of nearby targets, of far targets and targets presented dichoptically at optical infinity. We show that disparity driven vergence is not always required to rotate the primary positions. We find that eye orientation during fixation of far targets is idiosyncratic. We found a bimodal distribution ranging from null to about 30 deg of the relative exorotations of the two primary positions. By contrast, the difference of primary positions' orientation of the two eyes was, for targets at optical infinity, stable and similar across subjects. However, the displacement planes of the two eyes did not coincide, but were exorotated by 4.3 deg on average, even though horizontal vergence was close to zero. We discuss our results with reference to current models of binocular three-dimensional control.
journal_name
Vision Resjournal_title
Vision researchauthors
Bruno P,van den Berg AVdoi
10.1016/s0042-6989(96)00219-2subject
Has Abstractpub_date
1997-04-01 00:00:00pages
935-47issue
7eissn
0042-6989issn
1878-5646pii
S0042698996002192journal_volume
37pub_type
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