• Color Blindness - Topic Overview - WebMD

    www.webmd.com/eye-health/tc/color-blindness-topic-overview Color blindness means that you have trouble seeing red, green, or blue or a mix of these colors. It's rare that a person sees no color at all. Color blindness is also ...
  • What It's Like to Be Color Blind - KidsHealth

    kidshealth.org/kid/talk/qa/color_blind.html Cones and Color. To understand what causes color blindness, you need to know about the cones in your eyes. Cones in your eyes? Yes, but they're very small.
  • Color blindness - Wikipedia, the free encyclopedia

    en.wikipedia.org/wiki/Color_blindness Color blindness, or color vision deficiency, is the inability or decreased ability to see color, or perceive color differences, under normal lighting conditions.
    • Color Blindness - American Academy of Ophthalmology

      www.aao.org/eye-health/diseases/what-is-color-blindness Color blindness occurs when you are unable to see colors in a normal way. Most commonly, color blindness happens when someone cannot distinguish between certain
    • Color Blindness: MedlinePlus - National Library of Medicine

      www.nlm.nih.gov/medlineplus/colorblindness.html Most of us see our world in color. We enjoy looking at a lush green lawn or a red rose in full bloom. If you have a color vision defect, you may see these ...
    • Color blindness - All About Vision

      www.allaboutvision.com/conditions/colordeficiency.htm Learn about types of color blindness such as red green deficiency, and how to cope with daily vision problems.
    • Color blindness | University of Maryland Medical Center

      umm.edu/health/medical/ency/articles/color-blindness Causes. Color blindness occurs when there is a problem with the pigments in certain nerve cells of the eye that sense color. These cells are called cones.