key term - Accommodation–convergence reflex

Definition

The accommodation-convergence reflex is an involuntary response in which the eyes adjust their lens shape to focus on near objects and converge (move inward) simultaneously. This reflex integrates changes in lens curvature for focusing, with eye movement to ensure a single, clear image is perceived.

Related terms

Accommodation: The process by which the eye's lens changes shape to focus on objects at various distances.

Convergence: The inward movement of the eyes toward each other when focusing on a close object.

Cranial Nerves:

Nerves that emerge directly from the brain, including those involved in the control of eye movements and focusing mechanisms