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प्रश्न
Where is the near point of a person suffering from hypermetropia (or long-sightedness)?
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उत्तर
The near point of a person suffering from hypermetropia is more than 25 centimetres away.
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संबंधित प्रश्न
About 45 lac people in the developing countries are suffering from corneal blindness. About 30 lac children below the age of 12 years suffering from this defect can be cured by replacing the defective cornea with the cornea of a donated eye. How and why can students of your age involve themselves to create awareness about this fact among people?
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What type of spectacle lens should he use to correct the defect?
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Rods and cones (sensitivity).
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Rewrite the following table so as to match second and third column with first column.
|
Column I
|
Column II
|
Column III
|
|
(i) Myopia
|
Old age problem
|
Bifocal lens
|
|
(ii) Presbyopia
|
Nearsightedness
|
Concave lens.
|
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In what two whys is a yellow spot different from the blind spot?
What type of lens is used to correct Hypermetropia?
The diagram given below represents the cross-section of the human eye:
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Choose the Odd One Out:
When do we consider a person to be myopic or hypermetropic? Explain using diagrams how the defects associated with myopic and hypermetropic eye can be corrected?
