Genome-wide SNP homozygosity-mapping data of >400 unrelated individuals with autosomal-recessive CRD, Leber congenital amaurosis, and retinitis pigmentosa (RP [MIM 268000]) were assessed through the European Retinal Disease Consortium10,26 and allowed the identification of eight probands with a large homozygous region spanning POC1B. However, Sanger sequencing of POC1B in these probands did not reveal additional pathogenic mutations. Here, POC1B is linked to retinitis.