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Explain each defect :
- Myopia
- Hypermetropia
- Presbyopia
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Myopia:
A condition in which close objects appear clearly, but far ones don't.
Hypermetropia
A vision condition in which nearby objects are blurry.
Presbyopia
A condition of far-sightedness caused by loss of elasticity of the lens of the eye, occurring typically in middle and old age.
Hope It Helps.
A condition in which close objects appear clearly, but far ones don't.
Hypermetropia
A vision condition in which nearby objects are blurry.
Presbyopia
A condition of far-sightedness caused by loss of elasticity of the lens of the eye, occurring typically in middle and old age.
Hope It Helps.
DarkPerfection0202:
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Answered by
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Myopia ...( or short sightedness) is the defect of vision due to which a person cannot see the distant objects clearly ( though he can see the nearby objects clearly ) ... For example...... A child having the defect of myopia and sitting on the black benches in the class the child will not be able to see black board ....it caused by... 1) due to high converging power of lens..2) due to eyeball being too long ..
It can be corrected by using spectacles containing concave lens..
Hypermetrophia ...( long sightedness ) is that defect of vision due to which a person cannot see the nearby objects..for example...a hypermetrophic person cannot read a book clearly and comfortably..though he can read the no. Of distant bus clearly... It caused due to 1) low converging power eye lens 2) due to eye being too short...
It can be corrected by using spectacle contains convex lens...
Presbiopia....is defect of vision due to which a old person cannot see the nearby objects clearly due to loss of power of accommodation of eye.
It can be corrected by the same way as hypermetropia by using convex lens...
Hope it helpful
It can be corrected by using spectacles containing concave lens..
Hypermetrophia ...( long sightedness ) is that defect of vision due to which a person cannot see the nearby objects..for example...a hypermetrophic person cannot read a book clearly and comfortably..though he can read the no. Of distant bus clearly... It caused due to 1) low converging power eye lens 2) due to eye being too short...
It can be corrected by using spectacle contains convex lens...
Presbiopia....is defect of vision due to which a old person cannot see the nearby objects clearly due to loss of power of accommodation of eye.
It can be corrected by the same way as hypermetropia by using convex lens...
Hope it helpful
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