def _parse_refraction(line, lines):
    """Parse Energy [eV]  ref_ind_xx    ref_ind_zz    extinct_xx    extinct_zz"""
    split_line = line.split()
    energy = float(split_line[0])
    ref_ind_xx = float(split_line[1])
    ref_ind_zz = float(split_line[2])
    extinct_xx = float(split_line[3])
    extinct_zz = float(split_line[4])
    return {'energy': energy, 'ref_ind_xx': ref_ind_xx, 'ref_ind_zz':
        ref_ind_zz, 'extinct_xx': extinct_xx, 'extinct_zz': extinct_zz}
