Q. Which lenses should be used to correct the defect of astigmatism?
A) Bifocal lens
B) Convex lens
C) Cylindrical lens
D) Concave lens
✔ Correct Answer: Cylindrical lens
Exam Insight
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A) Bifocal lens
B) Convex lens
C) Cylindrical lens
D) Concave lens
✔ Correct Answer: Cylindrical lens
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