Definition
Myopia is also known as near-sightedness. This is when a person cannot see the distant objects but can see the nearby objects. This happens because the image is formed in front of the retina. The far point gets pushed near.
where O’ is the far point of normal eye and O is the far point of the myopic eye.
Causes
This defect can be caused by:
- increased curvature of the lens
- increased length of the eyeball
Correction
A myopic eye can be corrected using a concave lens.
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Flashcards
What is Myopia or Nearsightedness? Why does it happen? ? Myopia is also known as near-sightedness. This is when a person cannot see the distant objects but can see the nearby objects. This happens because the image is formed in front of the retina. The far point gets pushed near.
What are the causes of myopia? ? This defect can be caused by:
- increased curvature of the lens
- increased length of the eyeball
A myopic eye can be corrected using a {{concave lens}}.