If a 60-year-old individual experiences increased difficulty reading small print despite using reading glasses, which mechanism explains this phenomenon in terms of lens curvature?

💡 Explanation

Presbyopia, or age-related farsightedness, arises because the lens loses elasticity, reducing its ability to change curvature. Reduced ciliary muscle contractility impairs the lens' ability to accommodate for near vision; therefore, the individual struggles to focus on close objects, rather than other age-related changes, such as vitreous liquefaction.

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