Contact lens with controlled shape

  • US 7,296,890 B2
  • Filed: 10/25/2005
  • Issued: 11/20/2007
  • Est. Priority Date: 10/25/2005
  • Status: Active Grant
First Claim
Patent Images

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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