In one aspect of the invention, a multifocal ophthalmic lens includes an
optic and a plurality of diffractive zones disposes about an optical axis
of the optic. At least two of the diffractive zones have different areas
so as to cause broadening of optical energy profiles at a near focus and
a far focus of the diffractive zones for generating an intermediate
focus. A fraction of incident optical energy directed to the intermediate
focus is different from a fraction of incident optical energy directed to
at least one of the near or far foci.