Achromatopsia is a cone-dystrophy commonly studied, with many studies investigating the Cnga3−/−, Cngb3−/− models which make up approximately 30% and 50% of achromatopsia cases, respectively [11], as well as the cone photoreceptor function loss 1 (Cpfl) model. The gene discussed is CNGA3; the disease is achromatopsia.