The process by which the lens changes shape to focus incoming light so that it falls on the retina is called:

visual accommodation.

Explanation:

As rays of light (near) comes into the eyes, the lens changes it shape in other to focus these rays on the retina. Accommodation involves constriction of the pupils, convergence and changing the refractory power of the lens.

Objects more than 6 metres away from the eyes are focused on the retina without adjustment of the lens or convergence of the eyes

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