The invention relates to polypeptides which enable the specific targeting of a molecule of interest to homeoprotein Otx2 target cells. These polypeptides are defined by the general sequence: B1B2X1B3B4X2B5X3X4X5X6B6X7X8X9 (SEQ ID NO: 1), in which: B1, B2, B3, B4, B5 and B6are independently arginine or lysine； X1 and X8 are independently asparagine or glutamine； X2 is aspartic acid or glutamic acid； X3, X4 and X6 are independently threonine or serine； X5 is phenylalanine, tyrosine or tryptophan； X7 represents alanine or glycine； X9 is leucine, isoleucine or valine.
