JAMB Physics 2011 Objective — Question 24

Question 24 of 49 from the Joint Admissions and Matriculation Board (JAMB) Physics 2011 Objective paper, with the correct answer and a full explanation.

When the human eye loses its power of accommodation, the defect is known as

A. A. astigmatism
B. B. long-sightedness
C. C. short-sightedness
D. D. presbyopiaCorrect

Explanation

Accommodation is the ability to focus on objects at various distances clearly. When this power is lost due to old age, the defect is called presbyopia; it is corrected using a bifocal lens.

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