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Difference Between Myopia And Hypermetropia (edit)
Revision as of 17:23, 1 April 2015
, 17:23, 1 April 2015Created page with " Hypermetropia and Myopia , both are refractive defects in vision and are nearly opposite in nature. Below are the differences between the two . <tab sep=bar head=top class=..."
Hypermetropia and Myopia , both are refractive defects in vision and are nearly opposite in nature. Below are the differences between the two .
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'''Myopia''' | '''Hypermetropia'''
Myopia is also known as near-sightedness . | Hypermetropia is also known as far-sightedness.
In myopia , a person is not able to see distant objects clearly. | In hypermetropia , a person is not able to clearly see the nearby objects.
In this defect , lens are not able to produce sharp image of the distant objects on the retina instead the image is formed in front of the retina . | In this defect , image is formed behind the retina.
The reduction in the focal length of the eye lens may be a possible cause. | The increase in focal length of the eye lens may be a cause.
Another cause can be the elongation of eye ball. | It may also be caused due to flattening of the eyeball .
Myopia can be corrected by using concave lens of suitable focal length.| Hypermetropia may be corrected using convex lens of suitable focal length .
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