A hereditary macular disorder, usually presenting between the ages of 30-60, characterized by a large area of atrophy in the center of the macula and the loss or absence of photoreceptors, retinal pigment epithelium and choriocapillaris in this area, resulting in a progressive decrease in visual acuity. The disease is Monarch Disease Ontology id MONDO_0008982 (central areolar choroidal dystrophy). Also known as: CACD, areolar atrophy of the macula, central areolar choroidal sclerosis, choroidal dystrophy.