Vision allows us to perceive our world and gain information on our surroundings. It is an ancient trait that has evolved many times in the animal kingdom and has taken many shapes and forms in different organisms - from simple light detection in single-celled organisms to the extensive multi-chromatic vision of mantis shrimp which detects 16 spectral types, 12 of which are linked to color perception (Vorobyev 2004). The term 'chromatic vision' refers to the ability to perceive colors due to varying peak sensitivities of photopigments in the eye to certain spectral wavelengths of light, thus determining which colors are perceived and differentiated between.