Colour blindness: Will my children inherit the trait?
A father can’t pass his red-green colour blindness on to his sons.
While if a woman is red-green colour blind, all her sons will also be colour blind.
How common is it to be colour blind?
Colour blindness is more prevalent among males than females. The most common form of colour vision deficiency is encoded on the X sex chromosome.
About 8% of all men suffer from colour blindness.
Are there different types of colour blindness?
There are three main types of color vision deficiency: protan, deutan, and tritan defects.
Strongly colour blind people might only be able to tell about 20 hues apart from each other, with normal colour vision this number raises to more than 100 different hues.
In most Caucasian societies up to 1 in 10 men suffer, however only 1 in 100 Eskimos are colour blind.
One might expect the percentage of affected people to be relatively constant in all countries however this is far from the truth.
20/10 is the BEST vision while 20/100 means that one is legally blind.
20/10 means that when one is standing 20 feet away from an object one can see it exactly the same was as how someone standing 10 feet away would see it.
The first number indicates how far you're standing (20 feet) and the second number indicates how far a normal person has to stand to see it. (40 feet, 60 feet, 80 or 100)