Hi,

I am adding some interesting info about the color blindness....

Color blindness more prevalent in men:

According to the latest research, one in 12 men and one of 225 women is color blind. The color blindness is more prevalent in men because it is carried on the X chromosome of which men have only one copy.

In men, red or green cones work improperly or not at all work. Genes for red and green receptors are altered in men. These genes lie near each other on the X chromosome. The red/green type affects 8 to 10 percent of men

Marvin.
Eye disorders