If you hold a pencil at arm's length and slowly move it closer to your face,the ciliary muscles change the thickness of the lens of the eye to permit variable focusing on the pencil.This process is known as convergence.

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Quizplus · Accepted Answer

The process described is actually accommodation, not convergence. Convergence refers to the inward movement of the eyes to maintain binocular vision when looking at objects up close.

If You Hold a Pencil at Arm's Length and Slowly