How to correct presbyopia?

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Instead of biofocal lenses u can also use monovision contact lenses to correct presbyopia ,where one eye wears a near vision lens , and another eye wears a distance vision lens ur eyes automatically focus properly depending on visual situation.

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Bifocal lens is used to correct this defect.. bifocal lens is a mixture of concave lens and convex lens which is both responsible for vision in farsightedness and near sightedness.

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U can use bifocal lens without any prescriptive powen in the top of the lens... u can also reading glasses also... hope this answer will help u...

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We can correct these eyes by the help of bifocal lens

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Bifocal lens is used to correct

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We can correct it by using bifocal lens.

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By the using of bifocal lens upper lens is concave and lower lens be convex lens

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By the help of bi focal lense .....in which both concave and convex lens in it

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Hlo

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