Question Detail
Question
Presbyopia, a common age-related vision defect, is characterized by the near point receding. What is the primary reason for this condition?
Correct Answer
Option B is the correct answer.
Detailed Explanation
The text explains: 'The range of accommodation gradually diminishes with age because the crystalline lens grows throughout a person's life and the ciliary muscles are less able to distort a larger lens.' This reduced ability to change lens shape leads to the recession of the near point.
Hint
The cause is related to the flexibility of the lens and the strength of the muscles that control it, which changes with age.