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.