Ophthalmic lenses for reducing myopia progression and laser-based methods for forming the same
A method for forming optical elements at a surface of an ophthalmic lens including a lens material includes providing a laser interaction layer at a surface of the ophthalmic lens, the laser interaction layer including a first material having a first absorption of radiation at a first wavelength, λ 1 , the lens material having a second absorption of radiation at λ 1 , the second absorption being lower than the first absorption, exposing discrete areas of the laser interaction layer to laser radiation at λ 1 sufficient to form an optical element at each discrete area in the lens material.
1 . A method for forming optical elements at a surface of an ophthalmic lens comprising a lens material, the method comprising:
providing a laser interaction layer at a surface of the ophthalmic lens, the laser interaction layer comprising a first material having a first absorption of radiation at a first wavelength, λ 1 , the lens material having a second absorption of radiation at λ 1 , the second absorption being lower than the first absorption; and
exposing discrete areas of the laser interaction layer to laser radiation at λ 1 sufficient to form an optical element at each discrete area in the lens material.
2 . An ophthalmic lens, comprising:
a lens material having opposing curved surfaces shaped to provide a base curvature of the ophthalmic lens, the opposing curved surfaces comprising a first surface;
a plurality of optical elements arranged in a pattern at the first surface, the optical elements corresponding to regions having a refractive index different from a refractive index of the lens material and/or a surface shape different from a curvature of the first surface; and
a laser interaction layer at the first surface, the laser interaction layer comprising a first material having a first absorption of radiation at a first wavelength, λ 1 , the lens material having a second absorption of radiation at λ 1 , the second absorption being lower than the first absorption.
3 . An ophthalmic lens, comprising:
a lens material having opposing curved surfaces shaped to provide a base curvature of the ophthalmic lens, the opposing curved surfaces comprising a first surface; and
a laser interaction layer at the first surface, the laser interaction layer comprising a first material having a first absorption of radiation at a first wavelength, λ 1 , the lens material having a second absorption of radiation at λ 1 , the second absorption being lower than the first absorption.
4 . The ophthalmic lens of claim 3 , further comprising one or more additional layers disposed on the first surface along with the laser interaction layer, the one or more additional layers having a composition different from the laser interaction layer.
5 . The ophthalmic lens of claim 4 , wherein the one or more additional layers are selected from the group consisting of: a hardcoat, a UV blocking layer, an antireflection layer, a photochromic layer, and a hydrophobic layer.
6 . The ophthalmic lens of claim 4 , wherein the at least one or more additional layers comprise a first layer wherein the laser interaction layer is located between the first layer and the lens material.
7 . The ophthalmic lens of claim 6 , wherein the first layer is composed of a material that has an absorption at of radiation at λ 1 that is lower than the absorption of the first material.
8 . The ophthalmic lens of claim 7 , wherein the material composing the first layer has an absorption that is lower than the absorption of the lens material.
9 . The ophthalmic lens of claim 3 , further comprising a reflective layer that is reflective at λ 1 .
10 . The ophthalmic lens of claim 9 , wherein the reflective layer is transparent for at least some visible wavelengths.
11 . The ophthalmic lens of claim 9 , wherein the reflective layer is located between the lens material and the laser interaction layer.