Achromatopsia 2 (Day Blindness) – Labrador Retriever
Achromatopsia (ACHM), also called Cone Degeneration Disease (CD), is a degenerative disorder of the retinas that damages cone cells and causes vision loss, colour blindness and sensitivity to light. This variant of the disease, known as Achromatopsia-2, is found in the Labrador Retriever. It is caused by a recessive mutation to the gene CNGA3. A related variant of the disorder is also found in the German Shepherd.