Question

what are the defects of human eye? how can they be corrected? explain with a diagram? give the and in lonf
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Answer 1

The vision becomes blurred due to the refractive defects of the eye. There are mainly three common refractive defects of vision. These are

(i) myopia or near-sightedness,

(ii) Hypermetropia or far – sightedness, and

(iii) Presbyopia. These defects can be corrected by the use of suitable spherical lenses.

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