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bifocals

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia 0.01 sec.
bifocals /bi·fo·cals/ (bi´fo-k'lz) bifocal glasses.
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Bifocals are lenses meant for both near and far visions.
Features of Trifocals by Suzanne Hughes / Business community
He constructed the very first pair of bifocals with convex lenses in the lower half of the eyeglass frame and less convex lenses in the upper half.
How Do Bifocal Contact Lenses Work? by A. Nutt / Food/cooking/nutrition community
Presbyopia could be treated with the help of reading glasses, bifocals or progressive addition lenses, or contact lenses.
Overcoming Presbyopia Healthy Eyes Forever by Suzanne Hughes / Health care industry community
 
 
 
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