noun
- plural of vergence; the coordinated movement of both eyes in opposite directions to maintain single binocular vision
Usage: medical; ophthalmology
Examples
- The optometrist tested the patient’s vergences to check for eye coordination problems.
- Convergence and divergence are the two main types of vergences.
- Children with learning difficulties sometimes have problems with their vergences.
- The eye doctor measured both horizontal and vertical vergences during the exam.
- Proper vergences are essential for comfortable reading and close work.