- Most people have heard of Rods and Cones in our eyes
- Cones are for color and Rods are for night vision
- There are 3 kinds of Cones: red, green, and blue
- Cones don't actually sense color, they sense wavelengths of light and these are translated by the brain in to colors
- Its actually very rare for a person to be color "blind" (unable to see colors)
- More commonly people have a color "deficiency"
- This means that one type of cones is not sensing the correct wavelength
- This result in confusion between colors
FAQ about Color Blindness:
Q: What is the most common color deficiency?
A: Green deficiency (medical term: Deuteranomoly) is most common. This results in difficulty with greens, reds, and mixtures of these colors.
Q: Is it more common in men or women?
A: Men! 8% of men have color deficiency compared to only 0.5% of women.
Q: How do I know if I have a color deficiency?
A: If you have difficulty distinguishing between greens, reds, or mixtures of these. Take a quick test by looking at the attached image one eye at a time. If you miss more than 2, you may have a color deficiency.