Merrill watches his finger with both eyes as he brings it closer to his nose. As the finger gets closer, his eyes move inward and he feels his eye muscles working. Which depth cue(s) is/are associated with the changes made in the shape of the lens as he brings objects into focus
A) accommodation and convergence
B) convergence and accretion
C) accretion
D) stereopsis

Question

Quizplus · Accepted Answer

The changes made in the shape of the lens as Merrill brings his finger closer to his nose are associated with the depth cues of accommodation and convergence. Accommodation refers to the changes in the shape of the lens to allow for near or distant vision, while convergence refers to the inward movement of the eyes as an object gets closer to maintain single binocular vision.

Merrill Watches His Finger with Both Eyes as He Brings