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See pointed to a review published in Cochrane Reviews in August 2023. Researchers looked at 17 randomized controlled trials on blue-light filtering glasses to see whether or not there was evidence ...
A 1981 review of various studies to evaluate the effect of the X-chrom contact lens concluded that, while the lens may allow the wearer to achieve a better score on certain color vision tests (specifically pseudoisochromatic plates like the Ishihara test), it did not correct color vision in the natural environment.
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 ...
The optician plaintiff brought suit to have a 1953 Oklahoma law declared unconstitutional and to enjoin state officials from enforcing it. The law at issue (59 Okla. Stat. Ann. §§ 941–947, Okla. Laws 1953, c. 13, §§ 2–8) contained provisions making it unlawful for any person not a licensed optometrist or ophthalmologist to fit lenses to a face or to duplicate or replace into frames ...
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Lenses that filter blue light have been on the market for a long time in the form of brown-, orange-, and yellow-tinted sunglasses. [34] These tinted lenses were popular for the belief that they enhanced contrast and depth perception, but after early research showing the health risks of blue light exposure, [35] [36] became more popular for the ...