A focusing defect common in people over age 45 is:

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Presbyopia is a common age-related condition where the lens of the eye gradually loses its flexibility, making it difficult to focus up close. It typically affects people over the age of 45. Myopia, astigmatism, and macular degeneration are not typically associated with age-related changes in the lens. Myopia is a condition where distant objects appear blurry, astigmatism is a condition where the cornea is irregularly shaped, and macular degeneration is a condition where the central portion of the retina deteriorates over time.

A Focusing Defect Common in People Over Age 45 Is