Monochromatism is a very rare autosomal recessive disorder, occurring in only about 10 out of 1 million people (Goldstein, 2010). It is a form of color blindness in which the individual has no working cones.  As a result, they have an inability to see color, thus, everything is perceived in shades of gray.  These individuals have bad visual acuity and are very sensitive to bright lights.  This is because the rod system is not meant to function in bright light.  Consequently, individuals must wear strong eye protection when being outside on a sunny day (Krantz & Schwartz, 2015).