Webbifocal: 2. (of an eyeglass or contact lens) having two portions, one for near and one for far vision. WebThe meaning of BIFOCAL is having two focal lengths. How to use bifocal in a sentence.

BIFOCAL English meaning - Cambridge Dictionary

WebDec 12, 2024 · Bifocal lenses. Bifocals are eyeglasses with two lenses to fix both nearsighted and farsighted vision. There is a dividing line, called a “transition zone,” between the two types of lenses in bifocal glasses. Trifocal lenses. Trifocals are made up of three different lenses. They correct not only myopia and hyperopia but also presbyopia ... WebFeb 27, 2024 · Bifocals and trifocals have visible lines, but the line in a round-seg bifocal tends to be less noticeable than the lines in flat-top and Executive styles. There is something called an "invisible bifocal," which … sage luxury homes arizona

Bifocals definition of Bifocals by Medical dictionary

Webbifocal: [ bi´fo-kal ] of a lens, having two areas with different refractive powers. bifocal glasses eyeglasses in which each lens is made up of two segments of different refractive … WebMar 31, 2024 · The idea behind blue-light-blocking glasses is that wearing them can reduce eyestrain, eye damage, and affected sleep. But there isn’t a lot of research to back up the claim that the glasses ... Bifocals are eyeglasses with two distinct optical powers. Bifocals are commonly prescribed to people with presbyopia who also require a correction for myopia, hyperopia, and/or astigmatism. sagely ease and moral perception