Color blindness is a problem seeing colors the same way as most people.
The most common cause of color blindness is a faulty gene that is passed from mother to son. Other causes are:
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Color blindness is more common in men and people who are White. The risk is also higher in people who have any of the health problems that cause color blindness. Other things that raise the risk are:
Some people do not know they are color blind. Symptoms may be problems seeing:
You will be asked about your symptoms and health history. An eye exam and vision test will be done. You may need to see a doctor to confirm the diagnosis.
There is no cure for people who are color blind due to their family history. Most people learn ways to tell the difference between colors.
Some people may be able to get back their color vision when their medical problem is treated or their medicine is changed.
Some tools that may help people with everyday tasks are:
There are no known steps to prevent color blindness.
American Academy of Ophthalmology
Howard Hughes Medical Institute
Canadian Association of Optometrists
Canadian Ophthalmological Society
Color blindness. National Eye Institute website. Available at: https://nei.nih.gov/learn-about-eye-health/eye-conditions-and-diseases/color-blindness. Updated July 2019. Accessed October 22, 2019.
Colour blindness. Colour Blind Awareness website. Available at: http://www.colourblindawareness.org/colour-blindness. Accessed October 22, 2019.
Hydroxychloroquine. EBSCO DynaMed website. Available at:https://www.dynamed.com/drug-monograph/hydroxychloroquine. Accessed October 22, 2019.
What is color blindness? American Academy of Ophthalmology website. Available at: http://www.aao.org/eye-health/diseases/what-is-color-blindness. Updated September 6, 2019. Accessed October 22, 2019.
Last reviewed September 2019 by EBSCO Medical Review Board Daniel A. Ostrovsky, MD Last Updated: 07/10/2020