Bifocal Lens
Lens with two points of focus, designed to relieve presbyopia. The lower part of the lens allows near vision; the rest of the lens is designed for far vision.
Related Links
Bifocal Contact Lenses – A Consumer Guide
How Do Bifocal Eyeglasses Work?
Image formation by bifocal lenses in a trilobite eye? – ScienceDirect
Get Used to Your New Bifocals or Progressives
Bifocal and Astigmatic Lens Implants – Friedman Eye Center
Occupational Bifocal and Trifocals
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Stick on bifocal lenses
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Progressive Lenses Quick Start Guide - Tampa FL Eye Doctor
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Installing Stick-On Bifocal Lens
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Bifocal Reading Glasses. No power on top. Reader on bottom.
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Line and No Line Bifocals - What's the Difference
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Bifocals Trifocals and Progressive Lenses: What's the Difference
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Bifocal Lenses: Are They a Good Option for You
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Eye Health Optometry : Types of Eyeglass Lenses
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Bifocals Computer - Simple Solution
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How To Use The Lensmeter - Verification of A Complete Bifocal Pair
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Stick on bifocal lenses