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प्रश्न
Name the eye defects caused due to each of the following:
| Cause | Eye defect | |
| (a) | Lens turns opaque | ______ |
| (b) | Uneven curvature of the cornea | ______ |
| (c) | Deficiency of vitamin A | ______ |
| (d) | Lens loses its flexibility | ______ |
| (e) | Eye ball lengthens from front to back | ______ |
| (f) | Lens becomes too flat | ______ |
रिक्त स्थान भरें
उत्तर
| Cause | Eye defect | |
| (a) | Lens turns opaque | Cataract |
| (b) | Uneven curvature of the cornea | Astigmatism |
| (c) | Deficiency of vitamin A | Night-blindness |
| (d) | Lens loses its flexibility | Presbyopia |
| (e) | Eye ball lengthens from front to back | Myopia |
| (f) | Lens becomes too flat | Hyperopia |
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Some Common Defects of the Eye
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