Single correct option
A person with myopia (short-sightedness) can see nearby objects clearly, but not distant ones. The defect is corrected using
- A. a concave lens
- B. a convex lens
- C. a cylindrical lens
- D. a bifocal convex lens
Show answer and solution
Answer: (A) a concave lens
In myopia the image of a distant object forms in front of the retina because the eyeball is too long or the lens too converging. A concave (diverging) lens placed in front of the eye shifts the image back onto the retina. A convex lens corrects hypermetropia, and a cylindrical lens corrects astigmatism.
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