A multifocal ophthalmic lens, having outer annular zones with vision
correction powers less than a far vision correction power of the patient,
is disclosed. These additional annular zones come into play, when the
pupil size increases under dim lighting conditions, to thereby compensate
for the near-vision powered annular zones. The net effect of the
additional near vision annular zones and the additional annular zones
having power less than the far vision correction power is to shift the
best quality image from in front of the retina to an area on the retina of
the eye, to thereby reduce halo effects and improve image contrast.