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Does short-sightedness (myopia) or long-...

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

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PSEB-RAY OPTICS AND OPTICAL INSTRUMENTS-EXERCISE
  1. You are given prisms made of crown glass and flint glass with a wide v...

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  2. For a normal eye, the far point is at infinity and the near point of d...

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  3. Does short-sightedness (myopia) or long-sightedness (hyper metropia) i...

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  4. A myopic person has been using spectacles of power -1.0D for distant v...

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  5. A person looking at a person wearing a shirt with a pattern comprising...

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  6. A man with normal near point (25 cm) reads a book with small print usi...

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  7. A man with normal near point (25 cm) reads a book with small print usi...

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  8. A card sheet divided into squares each of size 1 mm^2 is being viewed ...

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  9. A card sheet divided into squares each of size 1 mm^2 is being viewed...

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  10. A card sheet divided into squares each of size 1 mm^2 is being viewed...

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  11. At what distance should the converging lens of focal length 10 cm be h...

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  12. At what distance should the converging lens of focal length 10 cm be h...

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  13. At what distance should the converging lens of focal length 10 cm be h...

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  14. A card sheet divided into squares each of size 1 mm^2 is being viewed ...

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  15. Answer the following questions: The angle subtended at the eye by an o...

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  16. Answer the following question: In viewing through a magnifying glass, ...

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  17. Answer the following questions: Magnifying power of a simple microsco...

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  18. Answer the following questions: Why must both the objective and the ey...

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  19. Answer the following questions: When viewing through a compound micros...

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  20. An angular magnification (magnifying power) of 30X is desired using an...

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