vergence

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ver·gence

 (vûr′jəns)
n.
1. A measure of the convergence or divergence of a pair of light rays, defined as the reciprocal of the distance between a point of reference and the point at which the rays intersect.
2. The inward or outward turning of one or both eyes that occurs when focusing on an object.

vergence

(ˈvɜːdʒəns)
n
(Physiology) the inward or outward turning movement of the eyes in convergence or divergence
[C19: from verge2 + -ence]
References in periodicals archive ?
All collapse structures present themselves as slides, flaps or wrinkle folds (among others) with vergences according to a higher order fold limb dip direction (to the west).
Furthermore, knee folds exhibited relatively independent vergences relative to those of higher-order structures.
In a clinical setting, there are two categories of eye movements to evaluate: nuclear eye movements, which are ductions, and supranuclear eye movements, which include versions, pursuits, saccades and vergences.
Vergences are binocular movements where both eyes move in a synchronous and symmetrical, but opposite direction, that is convergence and divergence movements.
Measurements of fusional vergences at far and near for convergence and divergence showed better results for athletes.
It is highly unlikely that correlative fold generations in adjacent localities would have different vergences.
Synorogenic non-metamorphic compressive deformation during the San Rafael orogeny (early Permian) leads to NW-trending folds and associated thrusts with SW vergences, which are retro-vergent structures in the Gondwanan orogen context.
During vergences, the innervations move the eyes in opposite directions; an innervation to initiate an ocular rotation of the right eye to the left (adduction, right MR) will be accompanied by an equal innervation to rotate the left eye to the right (adduction, left MR).
5B) shows the Permian (Gondwanan) uplift of the western and central domains, with east- and westward vergences respectively.