Inside the retina there are cones which have the task of hosting the three color receptors; red, green and blue. Color blindness is genetic and is commonly caused by a lack of one of the three color receptors. In a recent interview with Jay Neitz, an ophthalmologist at the University of Washington claims that the genes for green and red color receptors are found closely together on the X chromosome and are therefore often diminished (Hambling, 2013). The interview goes on to indicate that this type of color blindness is more common in males due to the lack of X chromosomes. For color blindness to take effect, males must have only one missing gene on the X chromosome, while females have two twice as many color receptors as men (Hambling, 2013). Neitz's research into color blindness is an ongoing work of art. So far, Neitz has been able to cure color blindness in squirrel monkeys by injecting a virus into their genes that ultimately splits the green color receptor in two and turns half of it into the missing red color receptors (Hambling, 2013). Although the results have been positive and stable, Neitz has yet to release the virus for human testing, due to the lack of a zero risk factor (Hambling, 2013). This type of research could ultimately evolve the medical field and form the bridge to it