Accommodative vergence is driven by the phasic component of the accommodative controller

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Abstract

Conflicting opinions exist as to whether the phasic (reflex) component alone or both the phasic and tonic (adaptive) components of the accommodation and vergence systems drive accommodative vergence and vergence accommodation crosslinks. In this study the dissociated phoria to a 2 D target was measured before and after accommodative adaptation to discriminate the two possibilities. Results showed a significant difference in the dark-focus of accommodation pre- and post-near-vision task, indicating that accommodative adaptation had occurred. No significant change occurred in dark-vergence or in the accommodative response to the 2 D target. However, a significant decrease was found in the dissociated phoria presumably because of decreased phasic accommodation and its stimulation of accommodative vergence after the adaptation. This result is consistent with a model in which the accommodative vergence crosslink is driven by phasic accommodation only. Copyright © 1995 Elsevier Science Ltd. All rights reserved.

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APA

Jiang, B. C. (1996). Accommodative vergence is driven by the phasic component of the accommodative controller. Vision Research, 36(1), 97–102. https://doi.org/10.1016/0042-6989(95)00051-Z

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