Convergence is a type of binocular cue and it refers to the fact that the closer an object, the more inward our eyes need to turn in order to focus.The farther our eyes converge, the closer an object appears to be.
An example of convergence is if you hold one finger about six inches from your eyes, and look at it; then move it a foot farther and you can feel the change in eye muscles at different distances.
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