Patent ID: 7229475

Claim:
An intraocular lens for a human eye, the intraocular lens comprising: an optic body sized and configured to be received in the human eye, the optic body comprising an anterior wall with an anterior optical center, a posterior wall with a posterior optical center, and a chamber between the anterior wall and the posterior wall, the optic body having an optical axis intersecting the anterior wall at the anterior optical center and the posterior wall at the posterior optical center; an optically transmissive primary fluid having a first density and a first refractive index, the primary fluid being contained in the chamber of the optic body in a sufficient amount that orienting the optical axis in a horizontal orientation for far vision positions the optical axis through the primary fluid and immerses the anterior and posterior optical centers in the primary fluid; and an optically transmissive secondary fluid substantially immiscible with the primary fluid and having a second density and a second refractive index that are different than the first density and the first refractive index, the secondary fluid contained in the chamber of the optic body in a sufficient amount that orienting the optical axis for near vision at a range of effective downward angles relative to the horizontal orientation positions the optical axis to extend through the primary fluid and the secondary fluid, wherein the chamber further comprises a dike for inhibiting flow of the secondary fluid to the anterior and posterior optical centers when the optic body is oriented to angle the optical axis upward relative to the horizontal orientation; and wherein the range of effective downward angles comprises an angle of 90 degrees relative to the horizontal orientation, wherein at the angle of 90 degrees the optical axis extends through the primary fluid and the secondary fluid.