Full Spelling:

Vergence

Description:

Vergence is known as the rotation of each eye in opposite directions so that the eyes’ lines of sight converge on the object, while accommodation is the ability of adjusting optical power of the eye lens so the eye can focus at different distances. For near-eye displays, it is crucial to present images at locations where the vergence distance is equal to the accommodation distance. Otherwise, the conflict between the two will induce eye fatigue and discomfort [20]. Chang C, Bang K, Wetzstein G, et al. Toward the next-generation VR/AR optics: a review of holographic near-eye displays from a human-centric perspective[J]. Optica, 2020, 7(11): 1563-1578.