Ophthalmic lenses with light scattering for treating myopia
AssigneeSightGlass Vision, Inc.
InventorsPeter Hones, Thomas W. Chalberg, Jr.
Life of this patent
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Abstract
An ophthalmic lens that includes a lens material having two opposing curved surfaces, the curved surfaces defining a lens axis; and a light scattering region surrounding a clear aperture. The clear aperture and the light scattering region are substantially centered on the lens axis, and the light scattering region has a plurality of spaced apart scattering centers (e.g., on a lens surface and/or embedded in the lens material) sized and shaped to scatter incident light, the scattering centers being arranged in a pattern that includes a random variation in spacing between adjacent dots and/or a random variation in dot size.
Claims18
An ophthalmic lens, comprising:
- a lens material having a curved surface;
- and
- a plurality of scattering centers sized and shaped to scatter incident light, the scattering centers being arranged in an area of the surface a pattern such that each scattering center is located at or near a corresponding array site of a two-dimensional array in which the spacing between array sites is a first distance, Dx, in one direction in a plane of the array and a second distance, Dy, in a second direction in the plane of the array, the second direction being orthogonal to the first direction,
- wherein a center of each scattering center is displaced from a corresponding array site by an amount δx in the first direction and by an amount δy in the second direction, where
- δx=Ax·Dx·RN[0,1], and
- δy=Ay·Dy·RN[0,1],
- wherein Ax and Ay are amplitudes that are between 0 and 1 and RN is a random number between 0 and 1.
Dependencies are inferred from the claim text.