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- Bifocals - Wikipedia, the free encyclopediaHistory · Construction · Problems · FutureWhile the D-segment bifocal offers superior optics, an increasing number of people opt for progressive bifocal lenses. Problems. Bifocals can cause headaches and …en.wikipedia.org/wiki/Bifocalsbifocal: Definition from Answers.com - 
Spam? Click hereadj. Having two focal lengths. Having one section that corrects for distant vision and another that corrects for near vision, as an eyeglass lens. Embodying two ...
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- Bifocals - Wikipedia, the free encyclopediaHistory - Spam? Click here
adj. Having two focal lengths. Having one section that corrects for distant vision and another that corrects for near vision, as an eyeglass lens. Embodying two ...
en.wikipedia.org/wiki/Bifocals
Tags: bifocals wikipedia the free encyclopediahistory nbsp 0183 32 construction nbsp 0183 32 problems nbsp 0183 32 futurewhile the d segment offers superior optics an increasing number of people opt for progressive lenses problemss can cause headaches and …en wikipedia org wikisdefinition from answers com
- Bifocals, Trifocals and Occupational Multifocal Lenses - Spam? Click here
Also, there are many special-purpose bifocal and trifocal lens designs available, including special glasses for computers and for other tasks that require excellent ...
www.allaboutvision.com/lenses/multifocal.htm
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- Bifocal sunglasses & Bi-focal safety glasses FREE S& - Spam? Click here
Bifocal Sunglasses ON SALE Prada Bifocal Sunglasses, Ralph Bifocal Sunglasses, Ralph Lauren Bifocal Sunglasses, Ray-Ban Bifocal Sunglasses, Wiley X Bifocal …
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- Bifocal.com » Bifocal guide - Spam? Click here
Learn more about bifocals, bifocal glasses, presbyopia and all the types of bifocal eyewear!
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- Bifocal - Wikipedia, the free encyclopedia - Spam? Click here
Bifocal may refer to: Bifocals, eyeglasses whose corrective lenses each contain regions with two distinct optical powers; Fundamental matrix (computer vision), which ...
en.wikipedia.org/wiki/Bifocal
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- Bifocal / Multifocal Contact Lenses at Lens.com ® - Spam? Click here
Bifocal / Multifocal Contact Lenses - Lowest Price Guarantee on all Bifocal / Multifocal contact lenses. Save time and money by ordering Bifocal / Multifocal contact ...
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- Bifocal Define Bifocal at Dictionary.com - Spam? Click here
–adjective 1. Chiefly Optics . having two foci. 2. (of an eyeglass or contact lens) having two portions, one for near and one for far vision. Order Bifocals Online ...
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- bifocal - definition of bifocal by the Free Online Dictionar - Spam? Click here
bi·fo·cal (b-f k l, b f-) adj. 1. Having two focal lengths. 2. Having one section that corrects for distant vision and another that corrects for near vision, as an ...
www.thefreedictionary.com/bifocal
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- Bifocal - Definition and More from the Free Merriam-Webster - Spam? Click here
Definition of BIFOCAL. 1: having two focal lengths . 2: having one part that corrects for near vision and one for distant vision <a bifocal eyeglass lens>
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