Intraocular lenses for reducing negative dysphotopsia
AssigneeAMO Groningen B.V.
InventorsRobert Rosen, Robin Zonneveld, Sieger Meijer, Aixa Alarcon Heredia, Mihai State, Carmen Canovas Vidal
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Abstract
Intraocular lenses for reducing Negative dysphotopsia (ND) are described herein. An example ophthalmic lens can include an optic with a central optical zone disposed about the optical axis and an attenuation optical zone disposed about the central optical zone, wherein the attenuation optical zone is contiguous with the central optical zone, and wherein optical power of the ophthalmic lens is gradually reduced within the attenuation optical zone.
Claims15
An ophthalmic lens, comprising:
- an optic including:
- an anterior surface defining an anterior side of the optic, and
- a posterior surface defining a posterior side of the optic, wherein the posterior surface opposes the anterior surface;
- a central optical zone disposed about the optical axis;
- and
- an attenuation optical zone disposed about the central optical zone, wherein the attenuation optical zone is contiguous with the central optical zone, and wherein optical power of the ophthalmic lens is gradually reduced within the attenuation optical zone.
A method for designing an ophthalmic lens comprising an optic, the optic including a central optical zone disposed about the optical axis and an attenuation optical zone disposed about the central optical zone, wherein the attenuation optical zone is contiguous with the central optical zone, the method comprising:
- establishing a starting point for the attenuation optical zone, the starting point having the same thickness and the same slope as an ending point for the central optical zone;
- establishing an ending point for the attenuation optical zone, wherein the ending point for the attenuation optical zone is at an edge of the optic;
- and
- optimizing splines between the starting and ending points for the attenuation optical zone, wherein the splines are optimized using a merit function.
Dependencies are inferred from the claim text.