The horizontal dark oculomotor rest position

摘要: This study sought to investigate whether eye dominance and age are related the stimulus-free oculomotor resting state described via dark disconjugate position (near or far), conjugate (left right), near dissociated phoria. Nineteen non-presbyopes 25 presbyopes with normal binocular vision participated in two identical sessions. The left-eye right-eye positions were recorded using a video-based infrared tracker while subjects total darkness. Dark responses calculated by computing difference average of response, respectively. decaying phoria level was for 15 s. A one-way ANOVA assessed statistical differences positions, comparing 1) sensory and/or motor dominant groups 2) non-presbyope presbyope groups. test-retests position, heterophoria high between sessions (r > 0.85; p < 0.00001). For (left-eye) showed rightward (leftward) (p < 0.01). receded compared (p < 0.0001). data support that left-eye, right-eye, predicts direction position. Future studies could underlying neural substrates may, part, contribute system environment. Knowledge brain-behavior governing visual-field preference has implications understanding natural aging process visual system.