A bifocal multiorder diffractive lens having a lens body with one or more first
regions having a first multiorder diffractive structure providing near vision correction,
and one or more second regions having a second multiorder diffractive structure
providing distance vision correction, in which the lens defines an aperture divided
between the first and second regions. The lens body may be provided by a single
optical element or multiple optical elements. In other embodiments, a bifocal multiorder
diffractive lens is provided by a single or multiple element lens body having a
multiorder diffractive structure for distance vision correction and one or more
refractive regions to add power for near vision correction, or a single or multiple
element lens body shaped for refractive power for distance vision correction and
a multiorder diffractive structure for add power for near vision correction. Multiorder
diffractive structures may be optimized for photopic and scotopic vision.