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A number of sunglass manufacturers and suppliers including INVU, BIkershades, Tifosi, Intercast, Oakley, ZEISS, Serengeti Eyewear, and Persol provide tinted lenses that use photochromism to go from a dark to a darker state. They are typically used for outdoor sunglasses rather than as general-purpose lenses.
Consumers can purchase frames, prescription eyeglasses, prescription or plain sunglasses, and contact lens refills. [9] After choosing the desired frames, the consumer goes through a three-step process to order lenses including choosing the lens type, lens thickness, and optional enhancement features. [ 11 ]
It is not possible to "see" the protection that sunglasses offer. Dark lenses do not automatically filter out more harmful UV radiation and blue light than light lenses. Inadequate dark lenses are even more harmful than inadequate light lenses (or wearing no sunglasses at all) because they provoke the pupil to open wider.
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Zenni Optical mail order. Zenni Optical was founded in 2003 by Tibor Laczay and Julia Zhen. [1] [2] Before being renamed to Zenni Optical when it began offering $7 and $8 glasses, the company was named 19dollareyeglasses.com. [3] [4] [5] Around 2014, co-founder Zhen acquired the building occupied by the Marin Independent Journal to house Zenni. [6]
Today, sunglasses are not only practical and healthy for your eyes — if they offer 100% UVA and UVB protection — they’re also a fashion statement and, in some cases, an incredible luxury.
Typical sunglasses lenses are tinted for protection against bright light or polarized to remove glare; photochromic glasses are clear or lightly tinted in dark or indoor conditions, but turn into sunglasses when they come into contact with ultraviolet light. Most over-the-counter sunglasses do not have corrective power in the lenses; however ...
Maui Jim is an American sunglasses manufacturer based in Peoria, Illinois. [2] Founded in Lahaina, Hawaii, in 1980, the company designs, develops, and manufactures a wide variety of sunglasses marketed under the eponymous brand name. As of 2015, it was the third-largest producer of sunglasses in the world. [1]