Color blindness is a medical condition that leaves a patient unable to distinguish between colors. Commonly, a patient affected by this eye desease is not able to differentiate between green, yellow, blue and red. The recognition of other colors might not be affected.
Color blindness is passed on by genes on the maternal side, however the majority of cases of color blindness does affect males due to the recessive X-Chromosome. In only very rare cases the maternal part is affected as well. This can be the case if the corrupted chromosome is passed on from the paternal side to the daughter and if the maternal side has the same condition as well.
The condition is caused by a genetic irregularity in the eye retina. The receptor deep in the eye converts light into transmissions to the brain, which in return lets us differentiate colors. Any disfunction of the retina causes color blindness to occur.
Currently, there is no remedy for treating color blindness and patients endure a live long suffering. Unfortunately, in some occasions further corruption, caused by the natural human aging process, to the retina has led to absolute color blindness.