How is astigmatism corrected?

  • A
    By using a convex lens
  • B
    By using a concave lens
  • C
    By using a cylindrical lens
  • D
    By using a bifocal lens

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What is long-sightedness (hypermetropia)?

Abnormalities in the normal vision of the eye are called defects of vision.

In the eye of a person suffering from hypermetropia (farsightedness),where is the image of a nearby object formed?

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