Type of disease: Rare conditions
Achromatopsia (ACHM) is a rare visual disorder caused by a defect in the retina, a light-sensitive layer of tissue that lines the inner surface of the eye. In people with ACHM, the structures responsible for detail and color vision, the cones, do not work properly. This condition is non-progressive and hereditary. Symptoms include decreased vision, color blindness, and light sensitivity.