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US 2014/0005780 A1Published application
Reduced glare intraocular lens
AssigneeAbbott Medical Optics Inc.
InventorHuawei Zhao
Life of this patent
Estimating the term…
Abstract
An intraocular lens for reducing aberrant optical effects includes an anterior surface, a posterior surface and a peripheral region/zone disposed about a central optical axis. The peripheral region/zone has an inflection region/transition area that is inclined with respect to the anterior surface at an angle between about 40 degrees and 120 degrees with respect to the optical axis.
Claims16
A intraocular lens comprising:
- an anterior optical surface extending peripherally from a central optical axis of the intraocular lens;
- a posterior optical surface extending peripherally from the central optical axis;
- and
- a peripheral zone disposed about and extending laterally from the anterior optical surface, the peripheral zone being inclined posteriorly from the anterior optical surface;
- wherein the extent of the posterior incline of the peripheral zone is sufficient to prevent aberrant optical effects from high angle optical rays directed posteriorly toward the intraocular lens and refracted by the anterior surface.
2 more elements
A intraocular lens comprising:
- an anterior optical surface extending peripherally from a central optical axis of the intraocular lens;
- a posterior optical surface extending peripherally from the central optical axis;
- and
- a peripheral surface disposed about and extending laterally from the anterior optical surface, the peripheral surface being inclined posteriorly from the anterior optical surface;
- wherein the intraocular lens is configured to minimize dysphotopsia by preventing light rays from passing through the peripheral surface of the lens.
2 more elements
A dysphotopsia reducing intraocular lens comprising:
- an optic configured for implantation in the eye of a patient, the optic having anterior surface and posterior surfaces intersected by an optical axis, the anterior and posterior surfaces being joined by a transition area disposed about the optical axis,
- wherein the transition area inclines posteriorly from the anterior surface and intersects the anterior surface at an angle greater than approximately 55 degrees with respect to the optical axis.
An intraocular lens comprising:
- an optic configured for implantation in the eye of a patient, the optic having anterior surface and posterior surfaces intersected by an optical axis, the anterior and posterior surfaces being joined by a peripheral region, the peripheral region inclined posteriorly from the anterior surface, the angle of inclination of the peripheral region being greater than
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- 1
-
- (
- n
- 2
- n
- 3
-
- sin
-
-
- r
- 1
- )
- ,
- where n3 is the refractive index of the material of the intraocular lens, n2 is the refractive index of aqueous humor and r1 is the angle of refraction at which the most peripheral rays are refracted into the eye by the cornea.
16 more elements
Dependencies are inferred from the claim text.