An accommodative intraocular lens, comprising: a lens body having a circular base lens with a base optic power for providing a base vision correction and a haptic structure connected to a peripheral side edge of the base lens, wherein the haptic structure of the lens body comprises a peripheral outer ring spaced from the base lens and a series of curved, outwardly projecting lens haptic elements extending between and connecting the peripheral outer ring of the haptic structure and the peripheral edge of the base lens; an actuator mountable over the base lens of the lens body, the actuator comprising a ring-shaped body defining a circular, centrally located opening and a series of radially projecting actuator haptic elements adapted to engage and attach the actuator to the lens body to form a substantially unitary structure, the actuator arranged in a spaced position with respect to the base lens so as to define a gap therebetween; and a fluidic optical element received within the gap between the base lens of the lens body and the actuator without being attached to the lens body or the actuator in an initial flattened condition, the fluidic optical element comprising a flexible membrane including a fluid material contained therein, and having a thickness corresponding to a measured gap between the ring shaped body of the actuator and base lens of the lens body; wherein when the actuator and lens body are urged inwardly, a ring pressure that acts on the fluidic optical element is generated, the ring pressure causing movement of the fluid material and deformation of the fluidic optical element so as to provide a further optical power in addition to the base optic power of the base lens. a lens body having a circular base lens with a base optic power for providing a base vision correction and a haptic structure connected to a peripheral side edge of the base lens, wherein the haptic structure of the lens body comprises a peripheral outer ring spaced from the base lens and a series of curved, outwardly projecting lens haptic elements extending between and connecting the peripheral outer ring of the haptic structure and the peripheral edge of the base lens; an actuator mountable over the base lens of the lens body, the actuator comprising a ring-shaped body defining a circular, centrally located opening and a series of radially projecting actuator haptic elements adapted to engage and attach the actuator to the lens body to form a substantially unitary structure, the actuator arranged in a spaced position with respect to the base lens so as to define a gap therebetween; and a fluidic optical element received within the gap between the base lens of the lens body and the actuator without being attached to the lens body or the actuator in an initial flattened condition, the fluidic optical element comprising a flexible membrane including a fluid material contained therein, and having a thickness corresponding to a measured gap between the ring shaped body of the actuator and base lens of the lens body; wherein when the actuator and lens body are urged inwardly, a ring pressure that acts on the fluidic optical element is generated, the ring pressure causing movement of the fluid material and deformation of the fluidic optical element so as to provide a further optical power in addition to the base optic power of the base lens.