Pathogenic mutations in the PDE6B gene are known to cause autosomal dominant congenital stationary night blindness (adCSNB) or autosomal recessive retinitis pigmentosa (arRP); however, similar mutations in PDE6A are known to cause only autosomal recessive retinitis pigmentosa (arRP) [34]. Here, PDE6A is linked to autosomal recessive retinitis pigmentosa.