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List Three Common Refractive Defects of Vision. Suggest the Way of Correcting These Defects. - Science

List three common refractive defects of vision. Suggest the way of correcting these defects.

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The three common refractive defects of vision are as follows:-

Myopia (short-sightedness):- It is corrected by using spectacles having concave lenses of appropriate power.

Hypermetropia (far-sightedness):- It is corrected by using spectacles having convex lenses of appropriate power.

Presbyopia:- This defect is corrected using bifocal lenses of appropriate power in which the upper part consists of a concave lens (to correct myopia) and the lower part consists of a convex lens (to correct hypermetropia).

Concept: Eye Defect and Its Correction: Myopia Or Near-sightedness
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