Any Leber congenital amaurosis in which the cause of the disease is a mutation in the CRX gene. The disease is Monarch Disease Ontology identifier MONDO_0013449 (Leber congenital amaurosis 7). Also known as: CRX Leber congenital amaurosis, LCA7, Leber congenital amaurosis caused by mutation in CRX, Leber congenital amaurosis type 7.