Color blindness is caused by a problem in the eye cones that inhibits the ability to tell the difference between some or all colors. There are three types of cones in the eye, with each being sensitive to either blue, red or green light. When one or more cones are not functioning properly, color vision problems may occur. Very few people see no color at all.WebMD: Color Blindness - Topic Overview
Main Types
- Red-green color vision: More common in menMedlinePlus: Color Blindness
- Blue-yellow color vision
- Complete color vision absence
Disclaimer
The content in this page is not a substitute for professional medical advice. If you think you have color blindness, please consult your doctor.
References
Fast Facts
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Fact:
Many types of color blindness
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Can be caused by eye, nerve or brain damage
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Exposure to certain chemical can cause color blindness
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Can affect learning and reading development
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May limit career choices
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Classified as a disability
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No treatment or preventionMedlinePlus: Color Blindness
