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  2. Color blindness - Wikipedia

    en.wikipedia.org/wiki/Color_blindness

    Peak spectral sensitivities are in the blue region of the visible spectrum (near 440 nm). People with this condition generally show nystagmus ("jiggling eyes"), photophobia (light sensitivity), reduced visual acuity, and myopia (nearsightedness). [30] Visual acuity usually falls to the 20/50 to 20/400 range.

  3. Monochromacy - Wikipedia

    en.wikipedia.org/wiki/Monochromacy

    Monochromacy (from Greek mono, meaning "one" and chromo, meaning "color") is the ability of organisms to perceive only light intensity without respect to spectral composition. Organisms with monochromacy lack color vision and can only see in shades of grey ranging from black to white. Organisms with monochromacy are called monochromats.

  4. LMS color space - Wikipedia

    en.wikipedia.org/wiki/LMS_color_space

    LMS (long, medium, short), is a color space which represents the response of the three types of cones of the human eye, named for their responsivity (sensitivity) peaks at long, medium, and short wavelengths. The numerical range is generally not specified, except that the lower end is generally bounded by zero.

  5. Visible spectrum - Wikipedia

    en.wikipedia.org/wiki/Visible_spectrum

    The dashed orange line is for a 53 year old eye, and dotted for a 75 year old eye, indicating the effect of lens yellowing.) Before reaching the retina, light must first transmit through the cornea and lens. UVB light (< 315 nm) is filtered mostly by the cornea, and UVA light (315–400 nm) is filtered mostly by the lens. [20]

  6. Achromatopsia - Wikipedia

    en.wikipedia.org/wiki/Achromatopsia

    Achromatopsia, also known as rod monochromacy, is a medical syndrome that exhibits symptoms relating to five conditions, most notably monochromacy.Historically, the name referred to monochromacy in general, but now typically refers only to an autosomal recessive congenital color vision condition.

  7. Color blind grandson and grandpa see certain colors for the ...

    www.aol.com/news/2015-12-07-color-blind-grandson...

    Kohen can even play sports in them. They were developed by Dr. Don Pherson and his team. They do have a bit of a back log, but are available to people for about $400. Valspar Color For The Colorblind:

  8. Stephen Nedoroscik Is 'Blind' in Bright Light and 'Scared' to ...

    www.aol.com/stephen-nedoroscik-blind-bright...

    Stephen Nedoroscik remembers how hard it was being a kid who couldn't toss a football with friends. Diagnosed at birth with two eye conditions, the Team U.S.A. Olympic gymnast always had trouble ...

  9. Impossible color - Wikipedia

    en.wikipedia.org/wiki/Impossible_color

    In 1983, Hewitt D. Crane and Thomas P. Piantanida performed tests using an eye-tracker device that had a field of a vertical red stripe adjacent to a vertical green stripe, or several narrow alternating red and green stripes (or in some cases, yellow and blue instead). The device could track involuntary movements of one eye (there was a patch ...