enabling the wearer to adjust her focus depending on the distance from the object she is viewing—similar to bifocal or progressive-lens glasses. There are also contact lenses that can correct ...

Most people are familiar with reading glasses, bifocals or progressive lenses as options ... With monovision, one eye is fit ...

Progressives lenses approach eyesight in this same way, affording the wearer the ability to adjust between different focal ...

A progressive lens design is like a bi- or tri-focal lens in that it corrects more than one vision problem at a time. However, these lenses have no visible lines, improving the cosmetic appearance of ...