Long-sightedness : Hypermetropia
Short-sightedness :

Myopia

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Focussing

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Astigmatism

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Accommodation

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Solution

The correct option is A Myopia
Long sightedness is also known as Hypermetropia and short sightedness is also known as Myopia.

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Similar questions

Q. Does short-sightedness (myopia) or long-sightedness (hypermetropia) imply necessarily that the eye has partially lost its ability of accommodation? If not, what might cause these defects of vision?

Q. What is the scientific name of (a) short-sightedness, and (b) long-sightedness?

Q. What kind of lens is used to correct (a) short-sightedness (b) long-sightedness ?

(a) What is long-sightedness ? State the two causes of long-sightedness (or hypermetropia). With the help of ray diagrams, show :
(i) the eye-defect long-sightedness.
(ii) correction of long-sightedness by using a lens.
(b) An eye has a near point distance of 0.75 m. What short of lens in spectacles would be needed to reduce the near point distance to 0.25 m ? Also calculate the power of lens required. Is this eye long-sighted or short-sighted ?
(c) An eye has a far point of 2 m. What type of lens in spectacles would be needed to increase the far point to infinity ? Also calculate the power of lens required. Is this eye long-sighted or short-sighted ?

Q. Complete the following sentences:
(a) A short-sighted person cannot see ............ objects clearly. Short-sightedness can be corrected by using ........... lenses.
(b) A long-sighted person cannot see ........... objects clearly. Long-sightedness can be corrected by using .............. lenses.

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Long-sightedness : Hypermetropia Short-sightedness :

The correct option is A MyopiaLong sightedness is also known as Hypermetropia and short sightedness is also known as Myopia.

Long-sightedness : Hypermetropia
Short-sightedness :

The correct option is A Myopia
Long sightedness is also known as Hypermetropia and short sightedness is also known as Myopia.