We all know that we shouldn’t make fun of people with glasses, but now it appears that bugs with bifocals deserve our respect too. Researchers from the University of Cincinnati (UC) have ...

PixelOptics' chief executive and founder. Blum hopes his high-tech glasses will eliminate a problem that's been plaguing folks ever since Benjamin Franklin invented bifocals in 1784: Wearing ...

Progressive lenses are an update on bifocal and trifocal lenses. Both of these more traditional types of glasses have telltale lines in the lenses. Progressives have a seamless look. Sometimes ...

The study randomly assigned 135 Chinese Canadian children (73 girls and 62 boys) with myopia of at least 1.00 diopter to receive single-vision lenses (n = 41), +1.50-diopter executive bifocals (n ...