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ReNu is a brand of soft contact lens care products produced by Bausch & Lomb. [1] By far the most popular brand of lens solutions until 2006, ReNu has rebranded its formulations as renu sensitive (formerly ReNu Multi-Purpose) and renu fresh (formerly ReNu MultiPlus), the latter containing a patented ingredient called hydranate, known by chemists as hydroxyalkylphosphonate, that removes protein ...
A much better way to disappear dirt, oil, smears and specks of lint is the megapopular Koala Eyeglass Lens Cleaner kit. This Amazon bestseller includes a bottle of alcohol-free cleaner and a ...
A photochromic eyeglass lens, part of the lens darkened after exposure to sunlight while the other part remained covered. A photochromic lens is an optical lens that darkens on exposure to light of sufficiently high frequency, most commonly ultraviolet (UV) radiation. In the absence of activating light, the lenses return to their clear state.
Uncoated glasses lens (top) versus lens with anti-reflective coating. The reflection from the coated lens is tinted because the coating works better at some wavelengths than others. An antireflective , antiglare or anti-reflection ( AR ) coating is a type of optical coating applied to the surface of lenses , other optical elements, and ...
Coverage by the trademark grew to include items such as paints, carpets, wallpaper, hair accessories, clothing, footwear, headgear, cleaning products, and jewelry. [84] In September 2008, Amazon filed to have the name registered. USPTO has finished its review of the application, but Amazon has yet to receive an official registration for the name.
A lens is made of two curved surfaces, and an aspheric lens is a lens where one or both of those surfaces is not spherical. Further research and development is being conducted [ citation needed ] to determine whether the mathematical and theoretical benefits of aspheric lenses can be implemented in practice in a way that results in better ...