Consider the following statements: Hypermetropia is a defect of vision in which 1) A person cannot see the distant objects clearly 2) A person cannot see the near objects clearly 3) The near point of the eye gets shifted away from the normal position 4) The far point of the eye gets shifted towards the eye Which of the statements given above are correct?
Consider the following statements: Hypermetropia is a defect of vision in which 1) A person cannot see the distant objects clearly 2) A person cannot see the near objects clearly 3) The near point of the eye gets shifted away from the normal position 4) The far point of the eye gets shifted towards the eye Which of the statements given above are correct? Correct Answer 2 and 3
CONCEPT:
Hypermetropia (long-sightedness):
- It is a defect of the eye due to which a person can see farther objects clearly but nearer objects are not clearly visible.
- The image is formed behind the retina and the near point moves away.
Important Points
|
Defects of Vision |
Details |
Corrections |
| Myopia (short-sightedness) | The human eye can see a nearby object clearly but cannot see far away object clearly. | concave lens |
|
Presbyopia |
In this defect, both near and far objects are not clearly visible. It is an old age disease and it is due to the loosing power of accommodation. |
Bifocal lenses |
|
Astigmatism |
In this defect, the eye cannot see horizontal and vertical lines clearly, simultaneously. It is due to the imperfect spherical nature of the eye lens. |
Cylindrical lens |