Contact lens with controlled shape
DCFirst Claim
1. A single component contact lens comprising:
- a front surface;
a back surface formed to fit a cornea of an eye;
a first axis, wherein the first axis has a first sub-axis and a second sub-axis;
a second axis, wherein the first axis and the second axis are orthogonal to each other and wherein the second axis has a third sub-axis and a fourth sub-axis;
a first base curve for the back surface, wherein the first base curve is associated with the first sub-axis;
a second base curve for the back surface, wherein the second base curve is associated with the second sub-axis;
a third base curve for back surface, wherein the third base curve is associated with the third sub-axis; and
a fourth base curve for the back surface, wherein the fourth base curve is associated with the fourth sub-axis, wherein the first base curve, the second base curve, the third base curve, and the fourth base curve are selected to form a shape for the back surface that conforms to a measured shape of the cornea.
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Accused Products
Abstract
A contact lens including a single component lens sized and dimensioned for placement on a cornea of an eye. The single component lens includes a first base curve for the back surface of the single component lens, wherein the first base curve is associated with the first sub-axis; a second base curve for the back surface, wherein the second base curve is associated with the second sub-axis; a third base curve for back surface, wherein the third base curve is associated with the third sub-axis; and a fourth base curve for the back surface, wherein the fourth base curve is associated with the fourth sub-axis. The first base curve, the second base curve, the third base curve, and the fourth base curve are selected to form a shape for the back surface of the single component lens that conforms to a measured shape of the cornea.
14 Citations
16 Claims
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1. A single component contact lens comprising:
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a front surface; a back surface formed to fit a cornea of an eye; a first axis, wherein the first axis has a first sub-axis and a second sub-axis; a second axis, wherein the first axis and the second axis are orthogonal to each other and wherein the second axis has a third sub-axis and a fourth sub-axis; a first base curve for the back surface, wherein the first base curve is associated with the first sub-axis; a second base curve for the back surface, wherein the second base curve is associated with the second sub-axis; a third base curve for back surface, wherein the third base curve is associated with the third sub-axis; and a fourth base curve for the back surface, wherein the fourth base curve is associated with the fourth sub-axis, wherein the first base curve, the second base curve, the third base curve, and the fourth base curve are selected to form a shape for the back surface that conforms to a measured shape of the cornea. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A single component contact lens comprising:
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a front surface; a back surface formed to fit a cornea of an eye; and a shape for the back surface that is mapped according to spherical coordinates, wherein the spherical coordinates comprises a radius defined by a distance between a fixed point and a point on the back surface, an azimuth angle defined relative to a first fixed axis associated with the single component lens and a second fixed axis associated with the single component lens, and a polar angle defined relative to a third axis associated with the single component lens, wherein the radius varies according to a first formula as the azimuth angle is varied, wherein the radius varies according to a second formula as the polar angle is varied, and wherein the first formula and the second formula are different. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification