What Are Bifocal Glasses?

Bifocal glasses are generally prescription glasses with lenses which have two different optical powers. These bifocal glasses are prescribed to people suffering from presbyopia and who also require a correction for myopia, hyperopia and/or astigmatism.

Peripheral Aberrations Associated With Progressive Bifocal Reading Glasses

Compared with traditional reading glasses, bifocal glasses or trifocals, presbyopic patients always expect more visual enjoyment from progressive bifocal reading glasses. The seeing difficulty caused by presbyopia has bothered and will continue to bother a lot of people, especially the… Read morePeripheral Aberrations Associated With Progressive Bifocal Reading Glasses

Bifocal Glasses Explained

Benjamin Franklin invented bifocal glasses in the 1700’s. However, the first eyeglasses were invented centuries earlier. The first eyeglasses, invented in the 13th century, had convex lenses that magnified objects in order for people to see them more clearly.