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CBSE - X - Physics

how to cure myopia? what are the causes of myopia?

Asked by Karuna 8th March 2017, 9:52 AM
Answered by Expert


Hi Karuna Goyari,

  • A person with myopia can see nearby objects clearly but cannot see distant objects distinctly.
  • A person with this defect has the far point nearer than infinity. Such a person may see clearly up to a distance of a few meters.
  • In a myopic eye, the image of a distant object is formed in front of the retina and not at the retina itself.
  • This defect may arise due to (i) excessive curvature of the eye lens or (ii) elongation of the eyeball.
  • This defect can be corrected by using a concave lens of suitable power. A concave lens of suitable power will bring the image back onto the retina and thus the defect is corrected.
Answered by Expert 8th March 2017, 5:39 PM

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