Search Header Logo
Defects in Human Eye

Defects in Human Eye

Assessment

Presentation

Physics

10th Grade

Hard

Created by

Joseph Anderson

FREE Resource

11 Slides • 2 Questions

1

​Defects of Vision

  • Myopia or near-sightedness or short-sightedness

  • Hypermetropia or far-sightedness or Long-sightedness

  • Presbyopia or old age hypermetropia

2

Myopia (near-sightedness)

A person with myopia can see nearby objects clearly but cannot see distant objects distinctly

3

The defect of eye called myopia (or short-sightedness) is caused :

  • (i) due to high converging power of eye-lens (because of its short focal length)

  • (ii) due to eye-ball being too long.

4

media

5

2. Hypermetropia (Long-sightedness or Far-sightedness)

Hypermetropia (or long-sightedness) is that defect of vision due to which a person cannot see the nearby objects clearly (though he can see the distant objects

6

The defect of eye called hypermetropia (or longsightedness) is caused :

(i) due to low converging power of eye-lens (because of its large focal length), or

(ii) due to eye-ball being too short.

7

media

8

Presbyopia (old sight)

Presbyopia is that defect of vision due to which an old person cannot see the nearby objects clearly due to loss of power of accommodation of the eye.

9

Cataract

The medical condition in which the lens of the eye of a person becomes progressively cloudy resulting in blurred vision is called cataract

10

media

11

Dual eye defect

media
media

12

Multiple Choice

A person cannot see the distant objects clearly (though he can see the nearby objects clearly). He is suffering from the defect of vision called :

1

cataract

2

hypermetropia

3

myopia

4

presbyopia

13

Multiple Choice

A person cannot see distant objects clearly. His vision can be corrected by using the spectacles containing :

1

concave lenses

2

plane lenses

3

convex lenses

4

contact lenses

​Defects of Vision

  • Myopia or near-sightedness or short-sightedness

  • Hypermetropia or far-sightedness or Long-sightedness

  • Presbyopia or old age hypermetropia

Show answer

Auto Play

Slide 1 / 13

SLIDE