| abstract |
In one aspect, the present invention provides an intraocular lens (IOL), which comprises at least two optics arranged in parallel along an optical axis, and an accommodative mechanism that engages at least one of the optics and adapts to adjust a combined optical power of the optics in response to the natural accommodative forces of an eye in which the optics are implanted in order to provide accommodation. At least one of the optics has a surface characterized by a first refractive region, a second refractive region and a transition region therebetween, where a change of optical phase of the incident light having a design wavelength (for example , 550 nm) across the transition region corresponds to a non-integer fraction of that wavelength. |