Meaning bifocals
What does bifocals mean? Here you find 6 meanings of the word bifocals. You can also add a definition of bifocals yourself
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bifocals"bifocal spectacles," 1899, see bifocal. Conceived by Benjamin Franklin, but called by him double spectacles.
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bifocalsA spectacle lens that is used for both long and short sight.
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bifocalsEyeglasses that incorporate two different powers in each lens, usually for near and distance corrections.
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bifocals(n) eyeglasses having two focal lengths, one for near vision and the other for far vision
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bifocalsCorrective lenses that have two powers of correction. Typically the majority of the lens is corrected for distance vision while a small are is corrected for near vision. Bifocals and trifocals are normally prescribed for individuals with presbyopia.
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bifocals
spectacles that have corrective lenses of two different powers; used by people who need both distance and reading glasses
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