High definition and extended depth of field intraocular lens
AssigneeZ Optics, Inc.
InventorsEdwin J. Sarver, James J. Simms
Life of this patent
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Abstract
A virtual aperture integrated into an intraocular lens is disclosed. Optical rays which intersect the virtual aperture are widely scattered across the retina causing the light to be virtually prevented from reaching detectable levels on the retina. The use of the virtual aperture helps remove monochromatic and chromatic aberrations yielding high-definition retinal images. For a given definition of acceptable vision, the depth of field is increased over a larger diameter optical zone. In addition, thinner intraocular lenses can be produced since the optical zone can have a smaller diameter. This in turn allows smaller corneal incisions and easier implantation surgery.
Claims37
1-5. (canceled)
An intraocular lens (IOL) comprising:
- a central optical zone, wherein, when the IOL is implanted in a patient's eye, a first plurality of light rays incident on an anterior surface of the central optical zone passes through the central optical zone to form an image on a retina;
- a first region integrated with and surrounding the central optical zone, wherein, when the IOL is implanted in the patient's eye, a second plurality of light rays incident on a first anterior surface of the first region is widely dispersed by the first region downstream from the IOL towards and across the retina, such that the image comprises an extended depth-of-field;
- and
- a second region comprising at least one haptic for positioning the IOL within the eye, wherein the second region is separated from the central optical zone by at least the first region.
Dependencies are inferred from the claim text.