bifocals
A lens having two separate and distinct points of focus (focal lengths) which incorporate two different powers in each lens, usually for near and distance corrections.
Related Links
Bifocals and Trifocals – A Complete Guide
Eye Problems — Do You Wear Bifocals — London Vision Clinic
Why You May Need Bifocals — Rittenhouse Eye Associates
Progressive Lenses Are Also Known As “No-Line” Bifocals Or Trifocals
Bifocals and Multifocals — Woodstock, ON — optometry
Waterford, Optometrist — Waterford, Bifocals — WI — Eye Care Center of Waterford —
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