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It is lenses which Benjamin Franklin invented.
What else can I help you with?
Which word starts with bi and means having 2 eyepieces?
Bifocal
Root word in bifocal?
The root word in bifocal is "focal," which refers to the point at which light rays converge after passing through a lens. The prefix "bi-" in bifocal means two, indicating that bifocals have two distinct areas for different vision correction needs.
What does add hi low med mean in contact lenses?
It means you are using a bifocal contact lens that has a bifocal power of about +1.25 to +1.50. A high add would have the bifocal power of about +2.50.
Is Valia a bifocal stream college?
I'm not sure what you mean by "bifocal stream college." Can you provide more context or clarify your question so I can better assist you?
A seven letter word that starts with b and ends with al?
bestial bipedal bifocal
How do you use bifocal in a sentence?
My gran has some bifocal glasses.
Which is better science general or science bifocal?
science bifocal
What are words that begin with bi and mean 2?
Bicycle, Bilingual, Binoculars, Bifocal, Biped
Inventor of bifocal glasses?
Benjamin Franklin
Which are better bifocal contact lenses or monovision contacts?
Bifocal contacts lenses are a better option..:)
Where was the bifocal glasses born?
Benjamin Franklin in America is usually regarded as the inventor of the Bifocal glasses .
What is the defernition for bifocal?
Bifocal is a type of corrective lens. Bifocal lenses are divided into two sections, usually the top for seeing far away objects and the bottom for seeing nearby objects.
