Accommodating intraocular lens using trapezoidal phase shift

An accommodating intraocular lens (IOL) system, comprising:

• an anterior accommodating IOL comprising a positive power anterior optic and a plurality of anterior haptics on opposite sides of the optic along a haptic diameter, each anterior haptic extending along the haptic diameter from a haptic-optic junction to at least one transverse arm contacting a capsular bag of the eye and each anterior haptic having sufficient length and rigidity to stretch a capsular bag of the eye to contact ciliary muscles of the eye, wherein the haptic-optic junctions vault the optic forward relative to the anterior haptics and compression of the anterior haptics by the ciliary muscles moves the anterior optic forward;
• and
• a posterior IOL comprising a posterior optic and posterior haptics, the posterior haptics extending in a radial direction generally perpendicular to the haptic diameter, wherein the posterior haptics are compressed when the capsular bag is stretched by the anterior haptics and the compression of the posterior haptics forces the posterior optic forward.

An accommodating intraocular lens (AIOL) comprising:

• an optic adapted to produce a trapezoidal phase shift;
• and
• a plurality of haptics, each haptic extending from a haptic-optic junction to at least one transverse arm contacting a capsular bag of the eye and each haptic having sufficient length and rigidity to stretch a capsular bag of the eye to contact ciliary muscles of the eye, wherein the haptic-optic junctions vault the optic forward relative to the haptics and compression of the haptics by the ciliary muscles moves the anterior optic forward, and wherein a combined accommodative power produced by the motion of the anterior optic and the trapezoidal phase shift is at least 0.5 Diopters.