Book 10, Question 92
Why Do Some People Have Trouble Telling Red From Green?
Some people have trouble telling red from green because they have color vision deficiency, the most common type of color blindness.
Some people have trouble telling red from green because the color cells in their eyes work a little differently. They were born that way, and it does not hurt. It is just a different way of seeing color.
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Quick answers
Are there other types?
Another type makes blue and yellow look the same.
Sources: National Institutes of Health, National Institutes of Health
More fun facts
- Color blindness, also called color vision deficiency, means seeing colors differently than most people.
- The most common type makes red and green hard to tell apart.
- Another type makes blue and yellow look the same.
- In rare cases, people see no color at all.
- About 1 in 12 men have color vision deficiency, and men are much more likely to have it than women.
- The most common types are passed down from parents to children.
- Many people do not know they have it, because the signs are often mild.
Sources: National Institutes of Health, National Institutes of Health
Questions kids ask
Can color blindness be cured?
There is no cure, but special glasses and contact lenses can help people see differences between colors.