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प्रश्न
Choose the correct answer :
Presbyopia is a disease of _____________
विकल्प
ear
nose
mouth
eye
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उत्तर
Presbyopia is a disease of eye
APPEARS IN
संबंधित प्रश्न
Name the defect of vision in a person:
whose near point is more than 25 on away.
Which defect of vision can be rectified:
by using a concave lens?
What is the far point of a person suffering from myopia (or short-sightedness)?
A person suffering from the eye-defect myopia (short-sightedness) can see clearly only up to a distance of 2 metres. What is the nature and power of lens required to rectify this defect?
The near-point of a person suffering from hypermetropia is at 50 cm from his eye. What is the nature and power of the lens needed to correct this defect? (Assume that the near-point of the normal eye is 25 cm).
Differentiate between members of the following pair with reference to what is asked in bracket.
Myopia and hyperopia (cause of the defect)
Differentiate between members of the following pair with reference to what is asked in the bracket.
Rods and cones (sensitivity).
What type of lens is used to correct Astigmatism?
Nearsightedness : concave lens : : farsightedness : _______
Observe the figure whether it is correct or not and explain the phenomenon.
