Bifocal or trifocal or progressive lenses are really just multiple sets of lenses squashed into a smaller form factor, and greatly reduce the wearer’s field of view which is itself a significant ...

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 ...

Understanding vision requirements, selecting the right lens materials and considering protective coatings can make ...

“Starting as a son’s desire to rid his father of bifocals, Dr Bernard Maitenaz’s invention of progressive lenses is now widely used to assist with the correction of presbyopia,” Elizabeth ...

Whether you need single vision, bi-focals, or progressive lenses, prescription sunglasses, or lenses that automatically ...

But I also need progressive lenses to see things clearly both up-close and at a distance. I have shopped at more than a dozen ...

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 ...