In order to switch focus from one object to the other object, an observer in this situation would have to increase the angle of convergence between the eyes. Hence, the disparity of objects closer than the horopter is called _____ disparity.
A) zero
B) stereopsis
C) crossed
D) uncrossed

Question

Quizplus · Accepted Answer

Crossed disparity refers to the situation where objects closer than the horopter require the eyes to converge more, thus the images of such objects appear to cross over the midline to achieve single binocular vision.

In Order to Switch Focus from One Object to the Other