vergence definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
- 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.
- The inward or outward turning of one or both eyes that occurs when focusing on an object.
vergence - Medical Definition
A disjunctive movement of the eyes in which the fixation axes are not parallel.