A clinically and genetically heterogeneous group of nonprogressive retinal disorders that are characterized by impaired NIGHT VISION, decreased VISUAL ACUITY; NYSTAGMUS; MYOPIA, and STRABISMUS. CSNB can be classified into 2 groups based on ELECTRORETINOGRAPHY findings. Germline mutations in several genes have been identified. OMIM: 310500
Date introduced: August 25, 2010