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But the glasses themselves (which took around 10 days to arrive — your mileage may vary) are great; they're lightweight and comfortable, and Pair nailed my fairly complicated progressive-lens ...
After turning 40, founder Rick Hopper started using readers and began habitually losing, scratching and dropping his glasses. [1] In 2010, Hopper made prototypes using paperclips and magnets, solving the problem he had with trying to keep his glasses safe and secure. [1] It did not take long for consumer interest to grow.
Chunlin Miao, et al., "Shear stress in magnetorheological finishing for glasses," Applied Optics 48, 2585-2594 (2009) Chunlin Miao, et al., "Process parameter effects on material removal in magnetorheological finishing of borosilicate glass," Applied Optics 49, 1951-1963 (2010) German Patent: DE69924595T2
n November 1954, 29-year-old Sammy Davis Jr. was driving to Hollywood when a car crash left his eye mangled beyond repair. Doubting his potential as a one-eyed entertainer, the burgeoning performer sought a solution at the same venerable institution where other misfortunate starlets had gone to fill their vacant sockets: Mager & Gougelman, a family-owned business in New York City that has ...
Eyewear frames around this time were mainly made of animal bones, horns and fabric; the implementation of wire frames in the 16th century further allowed glasses to be mass-produced. The 16th century also saw the earliest ancestors of pince-nez eyewear, which secured itself to the wearer through "pinching" the nose and later would become ...
Adjustable focus eyeglasses have one focal length, but it is variable without having to change where one is looking. Possible uses for such glasses are to provide inexpensive eyeglasses for people from low-income groups , developing countries , third world countries or to accommodate for presbyopia.