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  2. Waardenburg syndrome - Wikipedia

    en.wikipedia.org/wiki/Waardenburg_syndrome

    Ferrets with Waardenburg syndrome have a small white stripe along the top or back of the head and sometimes down the back of the neck (known as a "blaze" coat pattern), or a solid-white head from nose to shoulders (known as a "panda" coat pattern). Affected ferrets often have a very slightly flatter skull and wider-set eyes than healthy ferrets.

  3. Color blindness - Wikipedia

    en.wikipedia.org/wiki/Color_blindness

    Tritans see short-wavelength colors (blue, indigo and spectral violet) as greenish and drastically dimmed, some of these colors even as black. Yellow and orange are indistinguishable from white and pink respectively, and purple colors are perceived as various shades of red. Unlike protans and deutans, the mutation for this color blindness is ...

  4. Visual impairment - Wikipedia

    en.wikipedia.org/wiki/Visual_impairment

    Visual or vision impairment (VI or VIP) is the partial or total inability of visual perception.In the absence of treatment such as corrective eyewear, assistive devices, and medical treatment, visual impairment may cause the individual difficulties with normal daily tasks, including reading and walking. [6]

  5. 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:

  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. Melanism - Wikipedia

    en.wikipedia.org/wiki/Melanism

    Melanism is the congenital excess of melanin in an organism resulting in dark pigment. Pseudomelanism, also called abundism, is another variant of pigmentation, identifiable by dark spots or enlarged stripes, which cover a large part of the body of the animal, making it appear melanistic. [2]

  8. How people who are blind dream - AOL

    www.aol.com/article/2014/06/18/how-people-who...

    For sighted people, dreaming is primarily a visual A new study published in the journal Sleep Medicine focused on how the blind dream. How people who are blind dream

  9. Monochromacy - Wikipedia

    en.wikipedia.org/wiki/Monochromacy

    People with RM have a reduced visual acuity, (usually about 0.1 or 20/200), have total color blindness, photo-aversion and nystagmus. The nystagmus and photo-aversion usually are present during the first months of life, and the prevalence of the disease is estimated to be 1 in 30,000 worldwide. [ 3 ]