Color Blindness
Basics
See, Play and Learn
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Resources
For You
Summary
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 colors differently than most people.
There are three main kinds of color vision defects. Red-green color vision defects are the most common. This type occurs in men more than in women. The other major types are blue-yellow color vision defects and a complete absence of color vision.
Most of the time, color blindness is genetic. There is no treatment, but most people adjust and the condition doesn't limit their activities.
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Facts About Color Blindness
(National Eye Institute)
- What is Color Blindness? (American Academy of Ophthalmology) Also in Spanish
Specifics
- Achromatopsia (American Association for Pediatric Ophthalmology and Strabismus)
Genetics
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Genetics Home Reference: achromatopsia
(National Library of Medicine)
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Genetics Home Reference: color vision deficiency
(National Library of Medicine)
Statistics and Research
- Testing Children for Color Blindness (American Academy of Ophthalmology)
Clinical Trials
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ClinicalTrials.gov: Color Vision Defects
(National Institutes of Health)
Journal Articles References and abstracts from MEDLINE/PubMed (National Library of Medicine)
Find an Expert
Children
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Ask a Scientist: What is Color Blindness?
(National Eye Institute)
- What It's Like to Be Color Blind (Nemours Foundation)
Patient Handouts
- Color blindness (Medical Encyclopedia) Also in Spanish
- Color vision test (Medical Encyclopedia) Also in Spanish