OPTIMIZED INTRAOCULAR LENS
First Claim
1. A method for optimizing the parameters of an intraocular lens that is adapted to be implanted into an eye of a patient, comprising:
- selecting a first lens parameter;
selecting a second lens parameter;
selecting a merit function;
selecting an initial value for the first lens parameter;
selecting an initial value for the second lens parameter;
calculating an initial merit function value using the selected merit function;
varying at least one of the initial first value for the first lens parameter and the initial value for the second lens parameter a selected amount;
calculating additional merit function values for each time the first value of the first lens parameter and the first value of the second lens parameter are varied;
determining the optimized merit function value from the calculated merit function values; and
determining a preferred value of the first lens parameter and a preferred value of the second lens parameter that correspond to the optimized merit function value.
1 Assignment
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Accused Products
Abstract
An optimized aspheric lens has improved optics when implanted into a patient having a curved retina. Light entering the optimized aspheric lens on-axis or at an angle to the optical axis is properly focused by the lens, reducing aberrations and producing a much smaller spot size of light on the retina. A method of selecting the optimized values for variables of the lens design, such as base radii of the front and back surface of the lens, conic constants of the front and back surfaces, and/or center thickness of the lens, among other possible parameters is provided. The method includes calculating changes in a merit function while changing the various values for the variables and selecting an optimized merit function.
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Citations
21 Claims
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1. A method for optimizing the parameters of an intraocular lens that is adapted to be implanted into an eye of a patient, comprising:
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selecting a first lens parameter; selecting a second lens parameter; selecting a merit function; selecting an initial value for the first lens parameter; selecting an initial value for the second lens parameter; calculating an initial merit function value using the selected merit function; varying at least one of the initial first value for the first lens parameter and the initial value for the second lens parameter a selected amount; calculating additional merit function values for each time the first value of the first lens parameter and the first value of the second lens parameter are varied; determining the optimized merit function value from the calculated merit function values; and determining a preferred value of the first lens parameter and a preferred value of the second lens parameter that correspond to the optimized merit function value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification