Why does the human lens lose accommodative ability, resulting in presbyopia, as the eye ages and ciliary muscle function declines, affecting near focus differently than far focus?

💡 Explanation

Presbyopia results from decreased elasticity of the lens capsule, which reduces the lens's ability to change curvature via ciliary muscle action for near focus, because the lens becomes less responsive to the ciliary muscles. Therefore, the lens' shape cannot adjust sufficiently for near vision, rather than issues directly involving photoreceptors or tear film.

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