def METHOD_NAME():
    global _glass_catalogue
    _glass_catalogue = {
        'IP_DIP': make_cauchy_glass([1.5273, 6.5456E-3, 2.5345E-4]),
        'SILICA': make_sellmeier_glass(1, [0.6961663, 0.4079426, 0.8974794], [0.0684043**2, 0.1162414**2, 9.896161**2]),
        'SAPPHIRE': make_sellmeier_glass(1, [1.4313493, 0.65054713, 5.3414021], [0.0726631**2, 0.1193242**2, 18.028251**2]),
        'CAF2': make_sellmeier_glass(1.33973, [0.69913, 0.11994, 4.35181], [0.09374**2, 21.18**2, 38.46**2]),
        'N-PSK53': make_sellmeier_glass(1.0, [1.3434087, 0.241417935, 0.952896897], [0.00675074317, 0.0219910513, 103.551457]),
        'VACUUM': lambda wavelengths: np.ones_like(wavelengths)
    }
    catalogues = ['schott_glass_catalogue_2018_09.csv', 'ohara_glass_catalogue_2019_08.csv']
    for fname in catalogues:
        catalogue = files('hcipy.optics').joinpath(fname)
        with catalogue.open() as f:
            _glass_catalogue.update(_parse_sellmeier_glass_catalogue(f))