vergence

Definitions

1. The simultaneous turning of both eyes when focusing.
   countable, uncountable
2. A measure of convergence or divergence of rays.
   countable, uncountable
3. The direction of the overturned component of an asymmetric fold.
   countable, uncountable

Equivalents

Examples

“a special vertex trial case computed for an object vergence of 4.00.”

“1947 Benjamin King Johnson, Optics and Optical Instruments: An Introduction with Special Reference to Practical Applications, Courier Corporation (1960 [1947]), p. 152. "Ample movement between the source and condenser should be available in order⟳ to allow⟳ for a variation in the vergence of the light⟳ leaving the condenser"”

CEFR level