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  2. Color blind glasses - Wikipedia

    en.wikipedia.org/wiki/Color_blind_glasses

    Smart glasses like the Google Glass and Epson Moverio can act like active lenses and have been used with re-coloring apps to help the colorblind with color tasks. [ 23 ] [ 28 ] Digital re-coloring filters are usually based on Daltonization algorithms that re-color the image regardless of the content, but smart glasses can also be context-aware ...

  3. Color blindness - Wikipedia

    en.wikipedia.org/wiki/Color_blindness

    Persons with color blindness may be legally or practically barred from occupations in which color perception is an essential part of the job (e.g., mixing paint colors), or in which color perception is important for safety (e.g., operating vehicles in response to color-coded signals).

  4. Photochromism - Wikipedia

    en.wikipedia.org/wiki/Photochromism

    Photochromism was discovered in the late 1880s, including work by Markwald, who studied the reversible change of color of 2,3,4,4-tetrachloronaphthalen-1(4H)-one in the solid state. He labeled this phenomenon "phototropy", and this name was used until the 1950s when Yehuda Hirshberg , of the Weizmann Institute of Science in Israel proposed the ...

  5. Photochromic lens - Wikipedia

    en.wikipedia.org/wiki/Photochromic_lens

    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.

  6. Corrective lens - Wikipedia

    en.wikipedia.org/wiki/Corrective_lens

    A corrective lens is a transmissive optical device that is worn on the eye to improve visual perception. The most common use is to treat refractive errors: myopia, hypermetropia, astigmatism, and presbyopia. Glasses or "spectacles" are worn on the face a short distance in front of the eye. Contact lenses are worn directly on the surface of the eye.

  7. Colour-sided - Wikipedia

    en.wikipedia.org/wiki/Colour-sided

    Colour-sidedness was discussed in The Journal of Heredity in 1925 by Christian Wriedt, who probably coined the term. [4]: 465 [3]: 51 The mechanism of transmission of the colour-pointed pattern was identified and investigated in 2011–2013 by Keith Durkin, Bertram Brenig [] and others.

  8. Irlen syndrome - Wikipedia

    en.wikipedia.org/wiki/Irlen_Syndrome

    Irlen syndrome (or scotopic sensitivity syndrome) is a medical condition of disordered visual processing, which, it is proposed, can be treated by wearing colored lenses.. The ideas of Irlen syndrome are pseudoscientific and not supported by scientific evidence, [1] [2] [3] and its treatment has been described as a health fraud that takes advantage of vulnerable peop

  9. Chicken eyeglasses - Wikipedia

    en.wikipedia.org/wiki/Chicken_eyeglasses

    [c]hickens are color blind". [13] (In fact, chickens, like other birds, have good color vision. [14]) The firm had added the rose-colored feature to its glasses in 1939 under the brand name "Anti-Pix." [15] This variety of eyeglasses was more complicated than others because the red lenses were fixed to a hinge at the top of the frame. As the ...