Feedback from the muscles of the eye can help us judge the distance of an object, because the lens of the eye thickens when we change our focus from a distant object to a nearby object. This visual cue is called:
A)relative size.
B)accommodation.
C)linear perspective.
D)motion parallax.

Question

Quizplus · Accepted Answer

Accommodation is the visual cue that helps us to judge the distance of an object based on the thickness of the lens of the eye. As we change our focus from a distant object to a nearby object, the muscles in our eye adjust to thicken the lens to bring the object into focus. This change is noticed by the brain, which uses it to estimate the distance of the object. Relative size refers to the idea that objects that are closer appear larger than those that are farther away. Linear perspective refers to the way parallel lines appear to converge in the distance. Motion parallax refers to the way objects at different distances appear to move at different speeds when we move our eyes or head. While these cues can also inform our perception of distance, they do not directly involve the lens of the eye. Thus, B (accommodation) is the best choice.

Feedback from the Muscles of the Eye Can Help Us