In the retina, there are cones which are responsible for housing the three color receptors; red, green and blue. Color blindness is genetic and is usually caused by one of three color receptors missing. In a recent interview with Jay Neitz, an ophthalmologist at the University of Washington, states that the green and red color receptor genes are found closely together in the X chromosome and are therefore often diminished (Hambling, 2013). The interview continues to indicate that this type of color blindness is more common in men due to the lack of X chromosomes. Men only need to have a missing gene on the X chromosome for color blindness to take effect, while women have two X chromosomes with twice as many color receptors as men (Hambling, 2013). Neitz's research on color blindness is an ongoing work of art. So far, Neitz has successfully cured color blindness in squirrel monkeys by injecting a virus into their genes that ultimately split the green color receptor in two and turned half of them into the missing red color receptors (Hambling, 2013 ). Although the results were conclusive and stable, Neitz has not yet subjected the virus to human testing, due to the lack of a zero risk factor (Hambling, 2013). This type of research could ultimately evolve the medical field and provide the link to