An ophthalmologist tests a patient's eye accommodation, finding reduced lens curvature during near focus, despite ciliary muscle activation. Which mechanism explains this phenomenon in the context of presbyopia?

💡 Explanation

The reduced lens curvature is caused by decreased lens capsule elasticity due to aging, which characterizes presbyopia, because the ciliary muscle can contract, but the lens can't change shape; therefore, the lens stiffens rather than deforms appropriately, impacting near focus, unlike refractive errors or retinal issues.

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