Accommodative iol with toric optic and extended depth of focus

Details Accommodative iol with toric optic and extended depth of focus Accommodative iol with toric optic and extended depth of focus

G - Physics

02

C

G02C 7/08 (2006.01) A61F 2/16 (2006.01)

Patent

CA 2730123

In one aspect, the present invention provides an intraocular lens (IOL), which comprises at least two optics dis-posed in tandem along an optical axis, and an accommodative mechanism that is coupled to at least one of the optics and is adapt-ed to adjust a combined optical power of the optics in response to natural accommodative forces of an eye in which the optics are implanted so as to provide accommodation. At least one of the optics has a surface characterized by a first refractive region, a sec-ond refractive region and transition region therebetween, where an optical phase shift of incident light having a design wavelength (e.g., 550 nm) across the transition region corresponds to a non-integer fraction of that wavelength.

Sous un aspect, la présente invention porte sur une lentille intraoculaire (IOL), qui comprend au moins deux éléments optiques disposés en tandem le long d'un axe optique, et un mécanisme accommodatif qui est couplé à au moins l'un des éléments optiques qui est apte à ajuster une puissance optique combinée des éléments optiques en réponse à des forces accommodatives naturelles d'un il dans lequel les éléments optiques sont implantés de façon à permettre une accommodation. Au moins l'un des éléments optiques a une surface caractérisée par une première région réfractive, une seconde région réfractive et une région de transition entre celles-ci, un déphasage optique d'une lumière incidente ayant une longueur d'onde de conception (par exemple, 550 nm) à travers la région de transition correspondant à une fraction non entière de cette longueur d'onde.

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