The lenses are used for the correction of:____________?
Correct answer: C. Both A & B
- A. Long-sightedness
- B. short sightedness
- C. Both A & B
- D. None of those
Explanation
Corrective lenses treat both long-sightedness and short-sightedness: convex lenses help long-sighted eyes, while concave lenses help short-sighted eyes. The lens type differs, but both are refractive errors corrected with lenses.
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