Basics
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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.
Specifics
- Achromatopsia (American Association for Pediatric Ophthalmology and Strabismus)
Genetics
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Achromatopsia: MedlinePlus Genetics
(National Library of Medicine)
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Color vision deficiency: MedlinePlus Genetics
(National Library of Medicine)
Statistics and Research
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Eye Health Data and Statistics
(National Eye Institute) Also in Spanish
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)
- Article: Visual Tract Integrity Before and After Gene Therapy in Congenital Achromatopsia.
- Article: Congenital colour vision deficiency in healthcare professionals: a scoping review protocol...
- Article: Non-visual colour: A qualitative study of how the totally blind and...
- Color Blindness -- see more articles
Find an Expert
- Find an Ophthalmologist (American Academy of Ophthalmology) Also in Spanish
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National Eye Institute
Children
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Ask a Scientist: What Is Color Blindness?
(National Eye Institute)
- Color Blindness (American Association for Pediatric Ophthalmology and Strabismus)
Patient Handouts
- Color blindness (Medical Encyclopedia) Also in Spanish
- Color vision test (Medical Encyclopedia) Also in Spanish