All countries
English
    All categories
    Add to selected
    Share   ID: 229:198
    Order Color Blind Test
    0UAHGet latest price
    Description
    Color Blindness, or Color Vision Deficiency, is an eye condition where a person is not able to distinguish certain colors or shades of colors to some degree. Color Blindness does not mean that a person can only see black and white. A person with color blindness is able to see different colors, however they are not able to see some colors due to deficiencies in the eyes. Color blindness is a hereditary condition but can also be caused by eye diseases, damage to the retina and macula, and aging or when the lens is darkened over time from a cataract. Although there is no absolute treatment for hereditary color blindness, there are methods, techniques, and special glasses that may help people with color blindness differentiate different colors but not truly see them.

    What causes Color Blindness?

    The retina contains rods and cones that help us to see objects in different colors and varying degrees of brightness. The cones are photoreceptors that allow us to distinguish between many colors and different shades of these colors as well. The cones contain light sensitive pigments that are particular to range of range of wavelengths. There are three different types of cones with one sensitive to short wavelengths, or the color blue, one sensitive to medium wavelengths, or the color green , and the other sensitive to higher wavelengths, or the color red . When there are deficiencies in the cones, either at birth or acquired through other ways, the cones are not able to distinguish the particular wavelengths and thus, that color range is seen differently. Missing the cones responsible for green and red hues can also affect the sensitivity to brightness. Color blindness is hereditary and thus it is usually transferred at birth. As we age our sensitivity also diminishes as well but usually not to a great extent. Damage to the retina from eye diseases or physical damage may also lead to color blindness.
    Photos
    • Color Blind Test
    • Would you like to see more pictures?

      Send inquiry
    Buy color blind test
    Order
    Get latest price
    Or contact the seller
    Try to describe briefly the essence of your question to the seller (at least 20 symbols)
    Go backin section "Diagnosis of eye diseases"
    View also services categories "Diagnosis of eye diseases"
    for
    by the goods
    Your message must contain at least 20 symbols. The message must not be more than 2000 symbols.
    Obligatory field is not filled
    The field is wrongly filled
    The field is wrongly filled
    Compare0
    ClearSelected items: 0