Browsing articles tagged with " lense"
Aug
6
2015

Bifocal and Trifocal Lense

Bifocals and trifocals lenses have been around for many years to help us over age 40 deal with the normal age-related loss of near vision. History Of Bifocals and Trifocals Benjamin Franklin, the early American statesman and inventor, is credited with creating the first multifocal lense for eyeglass. Prior to Franklin’s invention, anyone with presbyopia had to carry two pairs of eyeglasses — one for seeing distant objects and one for seeing up close. Sometime around […]