METHOD FOR DESIGNING, EVALUATING AND OPTIMIZING OPHTHALMIC LENSES AND LASER VISION CORRECTION
The present invention relates generally to lens design and, more particularly, to a method for designing, evaluating and optimizing ophthalmic lenses and laser vision correction in order to optimally manage issues resulting from, or related to, halos.
1 . A method of designing an ophthalmic lens comprising the steps of:
determining wavefront aberrations of a patient or group of patients;
calculating simulated retinal images of extended objects using the wavefront aberrations; and
optimizing the ophthalmic lens based on an assessment of the simulated retinal images.
2 . A method according to claim 1 , wherein the extended objects represent a light source in a dark environment.
3 . A method according to claim 2 , wherein the light source represents a headlight of a car.
4 . A method according to claim 1 , in which the wavefront aberrations are based on corneal topography data.
5 . A method according to claim 1 , wherein the assessment is based on a comparison of a simulated halo image with a (set of) reference halo(s).
6 . A method according to claim 1 , wherein optimizing the ophthalmic lens is comprised of optimizing the IOL aberration profile.
7 . A method of designing an intraocular lens capable of reducing halos comprising the steps of:
utilizing a model that characterizes a simulated halo image;
optimizing the design of the intraocular lens in order to reduce the halo image.
8 . A method according to claim 7 , wherein the simulated halo image is calculated from corneal aberrations.
9 . A method according to claim 8 , further comprising the step of comparing the simulated halo image with a reference halo.
10 . A method according to claim 7 , wherein optimizing the design is comprised of optimizing the IOL aberration profile.
11 . A method of reducing halos associated with intraocular lenses comprising the steps of:
utilizing a model that characterizes a simulated halo image;
optimizing laser vision correction so as minimize the halo.
12 . A method according to claim 11 , wherein the simulated halo image is calculated from corneal aberrations.
13 . A method according to claim 12 , further comprising the step of comparing the simulated halo image with a (set of) reference halo(s).
14 . An intraocular lens comprising:
an anterior surface and an opposing posterior surface, wherein at least one of the surfaces of the ophthalmic lens is characterized by a phase profile configured to modify the wavefront aberration in order to shape the halo and intensity profile in order to minimize bother from the halo.
15 . The intraocular lens of claim 14 , wherein the phase profile modifies spherical aberration.
16 . The intraocular lens of claim 14 , wherein the phase profile modifies coma.
17 . The intraocular lens of claim 14 , wherein the phase profile modifies trefoil.
18 . The intraocular lens of claim 14 , wherein the phase profile modifies the product of astigmatism and coma.