Question
Distinguish between:
Farsightedness and Nearsightedness.
Farsightedness and Nearsightedness.
| Farsightedness | Nearsightedness | |
| 1. | This problem arises due to slight flattening of the eyeball. | This problem arises due to slight elongation of the eyeball. |
| 2. | The curvature of the cornea and eye lens decreases so that the converging power becomes less. | The curvature of the cornea and eye lens increases so that the converging power becomes more. |
| 3. | The distance between the eye lens and the retina decreases. | The distance between the eye lens and the retina increases. |
| 4. | The near point of the eye shifts farther away from the eye. | The far point of the eye shifts closer to eye. |
| 5. | A person suffering from this defect can see distant objects clearly but is unable to see nearby objects. | A person suffering from this defect can see nearby objects clearly but is unable to see distant objects. |
| 6. | It can be corrected by using spectacles having convex lenses of suitable focal length. | It can be corrected by using spectacles having concave lenses of suitable focal length. |
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