To date, over 60 different RDH12 mutations have been reported predominantly in LCA patients [15–17, 21, 23–27] but also in early-onset retinal dystrophy [8, 15, 20, 21, 24, 25], in families with arRP [26, 27], and in a family with autosomal dominant RP [19]. This evidence concerns the gene RDH12 and severe early-childhood-onset retinal dystrophy.