COLOR BLINDNESS

Color blindness is usually caused by a wide variety of factors but is often inherited. The most common forms of color blindness are red-green color blindness (Deuteranomaly), which are genetic conditions caused by a recessive gene on the X-chromosome. Other types of color blindness are Protanopia (the complete inability to tell the difference between red and green), Tritanopia (which makes colors duller, and makes it difficult to distinguish blue and green, purple and red, and yellow and pink), and the most uncommon, which is complete color blindness.