Hybrid optical edge for an intraocular lens (iol)

Patent metadata

Field	Value
Publication number	US-2019307555-A1
Application number	US-201916376045-A
Country	US
Kind code	A1
Filing date	Apr 5, 2019
Priority date	Apr 6, 2018
Publication date	Oct 10, 2019
Grant date	—

Abstract

An intraocular lens includes an optic having an anterior optic surface, a posterior optic surface, and an optic edge extending between the anterior optic surface and a posterior optic surface. The optic edge includes a convex portion extending from a periphery of the anterior optic surface and a flat portion extending from a periphery of the posterior optic surface such that a corner edge is formed between the optic edge and the posterior optic surface. The flat portion intersecting the convex portion to form the optic edge. Such an optic edge may eliminate glare or other undesired effects that adversely impact quality of vision.

First claim

What is claimed is:

1 . An intraocular lens comprising:
an optic comprising an anterior optic surface, a posterior optic surface, and an optic edge extending between the anterior optic surface and a posterior optic surface, the optic edge comprising:
a convex portion extending from a periphery of the anterior optic surface; and
a flat portion extending from a periphery of the posterior optic surface such that a corner edge is formed between the optic edge and the posterior optic surface, the flat portion intersecting the convex portion to form the optic edge.

2 . The intraocular lens of claim 1 , wherein a first radius of the curvature of the convex portion is greater than a second radius of the corner edge.

3 . The intraocular lens of claim 2 , wherein the first radius is less than a third radius of the anterior optic surface at a central portion of the intraocular lens.

4 . The intraocular lens of claim 3 , wherein the first radius is less than a fourth radius of the posterior optic surface at a central portion of the intraocular lens, and wherein the third radius is greater than the fourth radius.

5 . The intraocular lens of claim 2 , wherein the second radius is zero.

6 . The intraocular lens of claim 1 , wherein the convex portion has a radius between 0.4 mm and 0.6 mm.

7 . The intraocular lens of claim 1 , wherein the corner edge has a discontinuous slope with respect to the flat surface portion and the posterior optic surface.

8 . The intraocular lens of claim 1 , wherein the intraocular lens has a center thickness that is greater than an edge thickness of the optic edge.

Assignees

• Alcon Inc

Inventors

• Das Kamal K
• Liu Jian

Classifications

• A61F2/1613 Primary

  having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus · CPC title

• A61F2002/1681

  having supporting structure for lens, e.g. haptics · CPC title

• A61F2250/0036

  differing in thickness · CPC title

• A61F2230/0002

  Two-dimensional shapes, e.g. cross-sections · CPC title

• A61F2002/1696

  Having structure for blocking or reducing amount of light transmitted, e.g. glare reduction · CPC title