Green Color Blindness – Deuteranopia & Deuteranomaly
Green color blindness is by far the most common form; around 6% of the total male population is green color blind – primarily as a mild deficiency.
As with red color blindness, green color blind people can be categorised in two groups:
- Deuteranopia: the M-cones are missing, or non-functional, resulting in blindness to the green portion of the spectrum. 5% of males and 0.1% of females suffer this form of green color blindness.
- Deuteranomaly: The M-Cones are defective, operating below normal capacity to interfere with a person’s ability to see some shades of green, shifting color sensitivity toward the red sensitive L-cones. 1% of males and 0.35% of females suffer this form.
As with most forms of color blindness, Green color blindness is also sex linked, being passed on to children through faulty genetic coding in the X chromosome.