Question

Why xo people suffer from defects of vision .Give reason?

Answer 1

Answer:

The vision becomes blurred due to the refractive defects of the eye. There aremainly three common refractivedefects 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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