Any Leber congenital amaurosis in which the cause of the disease is a mutation in the RDH12 gene. The disease is Monarch Disease Ontology entry MONDO_0012990 (Leber congenital amaurosis 13). Also known as: LCA13, Leber congenital amaurosis caused by mutation in RDH12, Leber congenital amaurosis type 13, RDH12 Leber congenital amaurosis.