what do you mean by presbyopia? how it is corrected ?
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A person with presbyopia cannot read letters without spectacles. It may also happen that a person suffers from both myopia and hypermetropia. This type of defect can be corrected by using bi-focal lenses. A bifocal lens consists of both convex lens (to correct hypermetropia) and concave lens (to correct myopia).
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Presbyopia is the defect of vision in which a person can't able to see nearby object as well as also can't able to see distant object is called Presbyopia. • It can be corrected by using bifocal lens
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