Progressive multifocus glasses for all ... Blue light blocker and multifocal clear lens with UV400 protection, resisting 100% harmful blu-ray and alleviating discomfort from TV, PC, gaming ...

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

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 ...

“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 ...

or progressives, especially for the first time. Bifocals have two distinct lens powers. Trifocals have three distinct lens powers. Progressives are known as no-line bifocals, or as multifocals.