First Time User? Sign Up Now
For the visually-impaired, please click here.
Home > Health Library > Color blindness
Color blindness results from an absence of color-sensitive pigment in the cone cells of the retina, the nerve layer at the back of the eye that converts light into nerve signals that are sent to the brain. A person with color blindness has trouble seeing red, green, blue, or mixtures of these colors.
Most color vision problems are inherited and are present at birth. Other color vision problems, called acquired colored vision problems, are caused by aging, disease, injury to the eye, optic nerve problems, or a side effect of medicines. Inherited color blindness is more common than acquired color blindness and affects males far more often than females.
Inherited color vision problems cannot be treated or corrected. Some acquired color vision problems can be treated, depending on the cause.
Current as of: December 18, 2019
Author: Healthwise Staff
Medical Review:Kathleen Romito MD - Family Medicine & Martin J. Gabica MD - Family Medicine & Adam Husney MD - Family Medicine & Christopher J. Rudnisky MD, MPH, FRCSC - Ophthalmology
To learn more about Healthwise, visit Healthwise.org.
© 1995-2020 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
Feeling under the weather?
Use our interactive symptom checker to evaluate your symptoms and determine appropriate action or treatment.
Get started learning more about your health!
Our Interactive Tools can help you make smart decisions for a healthier life. You'll find personal calculators and tools for health and fitness, lifestyle checkups, and pregnancy.