Difference Between Myopia And Hypermetropia
State the difference between myopia and hypermetropia in brief.
Difference Between Myopia And Hypermetropia
Myopia- Myopia is also known as short-sightedness. In this defect, a person can see nearby objects clearly but cannot see distant objects. In this case, the image forms before the retina, not on the retina.
Causes- A person with this defect has the far point nearer than Infinity. This defect arises due to the decrease in focal length of the lens, either
•due to excessive curvature of eye lenses.
•along its action of the eyeball
As a result, the images formed before the retina.
Hypermetropia- Hypermetropia is also known as long-sightedness. In this defect, a person can see distant objects clearly but cannot see nearby objects. A person with this defect has the near point farther away from the normal near point. In this, an image is formed beyond the retina.
Causes- This effect rises due to the following reasons
• Focal length of the eye lens becomes large
Eyeballs become too short so that the image is formed behind the retina.
– Written By Aruja
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